1002054420 has 36 divisors (see below), whose sum is σ = 3039565620. Its totient is φ = 267214464.

The previous prime is 1002054379. The next prime is 1002054457. The reversal of 1002054420 is 244502001.

1002054420 is a `hidden beast` number, since 100 + 2 + 0 + 544 + 20 = 666.

1002054420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 570827664 + 431226756 = 23892^2 + 20766^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1002054420² = 2008226121283072800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1002054393 and 1002054402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2783305 + ... + 2783664.

Almost surely, 2^1002054420 is an apocalyptic number.

1002054420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002054420 is an abundant number, since it is smaller than the sum of its proper divisors (2037511200).

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

1002054420 is a wasteful number, since it uses less digits than its factorization.

1002054420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5566984 (or 5566979 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1002054420 is about 31655.2431676018. The cubic root of 1002054420 is about 1000.6843382410.

Adding to 1002054420 its reverse (244502001), we get a palindrome (1246556421).

The spelling of 1002054420 in words is "one billion, two million, fifty-four thousand, four hundred twenty".