Search a number
-
+
1042144420 = 22552107221
BaseRepresentation
bin111110000111011…
…101110010100100
32200121222102101111
4332013131302210
54113242110140
6251224434404
734553036632
oct7607356244
92617872344
101042144420
11495299589
12251018a04
13137ba4b05
149c59c352
15617587ea
hex3e1ddca4

1042144420 has 12 divisors (see below), whose sum is σ = 2188503324. Its totient is φ = 416857760.

The previous prime is 1042144417. The next prime is 1042144487. The reversal of 1042144420 is 244412401.

It can be written as a sum of positive squares in 2 ways, for example, as 617124964 + 425019456 = 24842^2 + 20616^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1042144391 and 1042144400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26053591 + ... + 26053630.

It is an arithmetic number, because the mean of its divisors is an integer number (182375277).

Almost surely, 21042144420 is an apocalyptic number.

1042144420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042144420 is an abundant number, since it is smaller than the sum of its proper divisors (1146358904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1042144420 is a wasteful number, since it uses less digits than its factorization.

1042144420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52107230 (or 52107228 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1042144420 is about 32282.2616927625. The cubic root of 1042144420 is about 1013.8552844969.

Adding to 1042144420 its reverse (244412401), we get a palindrome (1286556821).

The spelling of 1042144420 in words is "one billion, forty-two million, one hundred forty-four thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 52107221 104214442 208428884 260536105 521072210 1042144420