100402430420 has 12 divisors (see below), whose sum is σ = 210845103924. Its totient is φ = 40160972160.

The previous prime is 100402430419. The next prime is 100402430461. The reversal of 100402430420 is 24034204001.

It can be written as a sum of positive squares in 2 ways, for example, as 64448961424 + 35953468996 = 253868^2 + 189614^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5020121521 = 100402430420 / (1 + 0 + 0 + 4 + 0 + 2 + 4 + 3 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 100402430392 and 100402430401.

It is a congruent number.

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, 2510060741 + ... + 2510060780.

It is an arithmetic number, because the mean of its divisors is an integer number (17570425327).

Almost surely, 2^100402430420 is an apocalyptic number.

100402430420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100402430420 is an abundant number, since it is smaller than the sum of its proper divisors (110442673504).

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

100402430420 is a wasteful number, since it uses less digits than its factorization.

100402430420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5020121530 (or 5020121528 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 100402430420 its reverse (24034204001), we get a palindrome (124436634421).

The spelling of 100402430420 in words is "one hundred billion, four hundred two million, four hundred thirty thousand, four hundred twenty".