Search a number
-
+
1020422101 = 2939898821
BaseRepresentation
bin111100110100100…
…110011111010101
32122010002210222011
4330310212133111
54042212001401
6245131104221
734200305356
oct7464463725
92563083864
101020422101
11484002256
122458a2071
1313353a77a
1499745d2d
155e8b7451
hex3cd267d5

1020422101 has 8 divisors (see below), whose sum is σ = 1055993400. Its totient is φ = 984876480.

The previous prime is 1020422099. The next prime is 1020422107. The reversal of 1020422101 is 1012240201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 199656900 + 820765201 = 14130^2 + 28649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020422101 - 21 = 1020422099 is a prime.

It is a super-2 number, since 2×10204221012 = 2082522528418508402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020422107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111271 + ... + 120091.

It is an arithmetic number, because the mean of its divisors is an integer number (131999175).

Almost surely, 21020422101 is an apocalyptic number.

It is an amenable number.

1020422101 is a deficient number, since it is larger than the sum of its proper divisors (35571299).

1020422101 is an equidigital number, since it uses as much as digits as its factorization.

1020422101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12839.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1020422101 is about 31944.0464093076. The cubic root of 1020422101 is about 1006.7615454604.

Adding to 1020422101 its reverse (1012240201), we get a palindrome (2032662302).

The spelling of 1020422101 in words is "one billion, twenty million, four hundred twenty-two thousand, one hundred one".

Divisors: 1 29 3989 8821 115681 255809 35186969 1020422101