421123765135 has 16 divisors (see below), whose sum is σ = 521810871552. Its totient is φ = 325930809600.

The previous prime is 421123765093. The next prime is 421123765151. The reversal of 421123765135 is 531567321124.

It is not a de Polignac number, because 421123765135 - 2²³ = 421115376527 is a prime.

It is a super-2 number, since 2×421123765135² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87745 + ... + 921925.

It is an arithmetic number, because the mean of its divisors is an integer number (32613179472).

Almost surely, 2^421123765135 is an apocalyptic number.

421123765135 is a deficient number, since it is larger than the sum of its proper divisors (100687106417).

421123765135 is a wasteful number, since it uses less digits than its factorization.

421123765135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837474.

The product of its digits is 151200, while the sum is 40.

The spelling of 421123765135 in words is "four hundred twenty-one billion, one hundred twenty-three million, seven hundred sixty-five thousand, one hundred thirty-five".