401442137 has 2 divisors, whose sum is σ = 401442138. Its totient is φ = 401442136.

The previous prime is 401442133. The next prime is 401442187. The reversal of 401442137 is 731244104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 401441296 + 841 = 20036^2 + 29^2 .

It is a cyclic number.

It is not a de Polignac number, because 401442137 - 2² = 401442133 is a prime.

It is a super-2 number, since 2×401442137² = 322311578718253538, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401442133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200721068 + 200721069.

It is an arithmetic number, because the mean of its divisors is an integer number (200721069).

Almost surely, 2^401442137 is an apocalyptic number.

It is an amenable number.

401442137 is a deficient number, since it is larger than the sum of its proper divisors (1).

401442137 is an equidigital number, since it uses as much as digits as its factorization.

401442137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 401442137 is about 20036.0209872120. The cubic root of 401442137 is about 737.6907173908.

The spelling of 401442137 in words is "four hundred one million, four hundred forty-two thousand, one hundred thirty-seven".