239287026021 has 24 divisors (see below), whose sum is σ = 339830049504. Its totient is φ = 149738154240.

The previous prime is 239287025969. The next prime is 239287026031. The reversal of 239287026021 is 120620782932.

It is not a de Polignac number, because 239287026021 - 2⁷ = 239287025893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239287026031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46575 + ... + 693356.

It is an arithmetic number, because the mean of its divisors is an integer number (14159585396).

Almost surely, 2^239287026021 is an apocalyptic number.

It is an amenable number.

239287026021 is a deficient number, since it is larger than the sum of its proper divisors (100543023483).

239287026021 is a wasteful number, since it uses less digits than its factorization.

239287026021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740341 (or 740324 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 239287026021 in words is "two hundred thirty-nine billion, two hundred eighty-seven million, twenty-six thousand, twenty-one".