401435129 has 2 divisors, whose sum is σ = 401435130. Its totient is φ = 401435128.

The previous prime is 401435117. The next prime is 401435147. The reversal of 401435129 is 921534104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244609600 + 156825529 = 15640^2 + 12523^2 .

It is a cyclic number.

It is not a de Polignac number, because 401435129 - 2²⁴ = 384657913 is a prime.

It is a super-2 number, since 2×401435129² = 322300325590493282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401435029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200717564 + 200717565.

It is an arithmetic number, because the mean of its divisors is an integer number (200717565).

Almost surely, 2^401435129 is an apocalyptic number.

It is an amenable number.

401435129 is a deficient number, since it is larger than the sum of its proper divisors (1).

401435129 is an equidigital number, since it uses as much as digits as its factorization.

401435129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 401435129 is about 20035.8461014253. The cubic root of 401435129 is about 737.6864247285.

The spelling of 401435129 in words is "four hundred one million, four hundred thirty-five thousand, one hundred twenty-nine".