42431020024121 has 2 divisors, whose sum is σ = 42431020024122. Its totient is φ = 42431020024120.

The previous prime is 42431020024117. The next prime is 42431020024153. The reversal of 42431020024121 is 12142002013424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34406201862400 + 8024818161721 = 5865680^2 + 2832811^2 .

It is a cyclic number.

It is not a de Polignac number, because 42431020024121 - 2² = 42431020024117 is a prime.

It is not a weakly prime, because it can be changed into another prime (42431020024111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21215510012060 + 21215510012061.

It is an arithmetic number, because the mean of its divisors is an integer number (21215510012061).

Almost surely, 2^{42431020024121} is an apocalyptic number.

It is an amenable number.

42431020024121 is a deficient number, since it is larger than the sum of its proper divisors (1).

42431020024121 is an equidigital number, since it uses as much as digits as its factorization.

42431020024121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 42431020024121 its reverse (12142002013424), we get a palindrome (54573022037545).

The spelling of 42431020024121 in words is "forty-two trillion, four hundred thirty-one billion, twenty million, twenty-four thousand, one hundred twenty-one".