42231000137021 has 2 divisors, whose sum is σ = 42231000137022. Its totient is φ = 42231000137020.

The previous prime is 42231000136937. The next prime is 42231000137057. The reversal of 42231000137021 is 12073100013224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41996491420900 + 234508716121 = 6480470^2 + 484261^2 .

It is a cyclic number.

It is not a de Polignac number, because 42231000137021 - 2⁴² = 37832953625917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42231000127021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21115500068510 + 21115500068511.

It is an arithmetic number, because the mean of its divisors is an integer number (21115500068511).

Almost surely, 2^{42231000137021} is an apocalyptic number.

It is an amenable number.

42231000137021 is a deficient number, since it is larger than the sum of its proper divisors (1).

42231000137021 is an equidigital number, since it uses as much as digits as its factorization.

42231000137021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 42231000137021 in words is "forty-two trillion, two hundred thirty-one billion, one hundred thirty-seven thousand, twenty-one".