401404025129 has 2 divisors, whose sum is σ = 401404025130. Its totient is φ = 401404025128.

The previous prime is 401404025119. The next prime is 401404025159. The reversal of 401404025129 is 921520404104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400401669529 + 1002355600 = 632773^2 + 31660^2 .

It is a cyclic number.

It is not a de Polignac number, because 401404025129 - 2²⁰ = 401402976553 is a prime.

It is a super-2 number, since 2×401404025129² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401404025095 and 401404025104.

It is not a weakly prime, because it can be changed into another prime (401404025119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200702012564 + 200702012565.

It is an arithmetic number, because the mean of its divisors is an integer number (200702012565).

Almost surely, 2^401404025129 is an apocalyptic number.

It is an amenable number.

401404025129 is a deficient number, since it is larger than the sum of its proper divisors (1).

401404025129 is an equidigital number, since it uses as much as digits as its factorization.

401404025129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 401404025129 in words is "four hundred one billion, four hundred four million, twenty-five thousand, one hundred twenty-nine".