100420511402 has 16 divisors (see below), whose sum is σ = 160043289480. Its totient is φ = 47256706624.

The previous prime is 100420511383. The next prime is 100420511413. The reversal of 100420511402 is 204115024001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 93629268121 + 6791243281 = 305989^2 + 82409^2 .

It is a super-2 number, since 2×100420511402² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5100113 + ... + 5119764.

Almost surely, 2^100420511402 is an apocalyptic number.

100420511402 is a deficient number, since it is larger than the sum of its proper divisors (59622778078).

100420511402 is an equidigital number, since it uses as much as digits as its factorization.

100420511402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10219930 (or 10219896 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 100420511402 its reverse (204115024001), we get a palindrome (304535535403).

The spelling of 100420511402 in words is "one hundred billion, four hundred twenty million, five hundred eleven thousand, four hundred two".