426244043129 has 2 divisors, whose sum is σ = 426244043130. Its totient is φ = 426244043128.

The previous prime is 426244043111. The next prime is 426244043191. The reversal of 426244043129 is 921340442624.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 415277136400 + 10966906729 = 644420^2 + 104723^2 .

It is a cyclic number.

It is not a de Polignac number, because 426244043129 - 2¹² = 426244039033 is a prime.

It is a super-2 number, since 2×426244043129² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (426244049129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213122021564 + 213122021565.

It is an arithmetic number, because the mean of its divisors is an integer number (213122021565).

Almost surely, 2^426244043129 is an apocalyptic number.

It is an amenable number.

426244043129 is a deficient number, since it is larger than the sum of its proper divisors (1).

426244043129 is an equidigital number, since it uses as much as digits as its factorization.

426244043129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 426244043129 in words is "four hundred twenty-six billion, two hundred forty-four million, forty-three thousand, one hundred twenty-nine".