234426515021 has 4 divisors (see below), whose sum is σ = 234429554844. Its totient is φ = 234423475200.

The previous prime is 234426514981. The next prime is 234426515033. The reversal of 234426515021 is 120515624432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165197538025 + 69228976996 = 406445^2 + 263114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234426515021 is a prime.

It is a super-2 number, since 2×234426515021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234426515821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401140 + ... + 1559501.

It is an arithmetic number, because the mean of its divisors is an integer number (58607388711).

Almost surely, 2^234426515021 is an apocalyptic number.

It is an amenable number.

234426515021 is a deficient number, since it is larger than the sum of its proper divisors (3039823).

234426515021 is an equidigital number, since it uses as much as digits as its factorization.

234426515021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039822.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 234426515021 in words is "two hundred thirty-four billion, four hundred twenty-six million, five hundred fifteen thousand, twenty-one".