100420405045 has 32 divisors (see below), whose sum is σ = 122247062784. Its totient is φ = 79185600000.

The previous prime is 100420405003. The next prime is 100420405073. The reversal of 100420405045 is 540504024001.

It is a happy number.

It is not a de Polignac number, because 100420405045 - 2⁹ = 100420404533 is a prime.

It is a super-2 number, since 2×100420405045² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 59314219 + ... + 59315911.

It is an arithmetic number, because the mean of its divisors is an integer number (3820220712).

Almost surely, 2^100420405045 is an apocalyptic number.

It is an amenable number.

100420405045 is a deficient number, since it is larger than the sum of its proper divisors (21826657739).

100420405045 is a wasteful number, since it uses less digits than its factorization.

100420405045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413.

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 100420405045 its reverse (540504024001), we get a palindrome (640924429046).

The spelling of 100420405045 in words is "one hundred billion, four hundred twenty million, four hundred five thousand, forty-five".