402044131 has 2 divisors, whose sum is σ = 402044132. Its totient is φ = 402044130.

The previous prime is 402044119. The next prime is 402044141. The reversal of 402044131 is 131440204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402044131 - 2⁷ = 402044003 is a prime.

It is a super-5 number, since 5×402044131⁵ (a number of 44 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 402044099 and 402044108.

It is not a weakly prime, because it can be changed into another prime (402044141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201022065 + 201022066.

It is an arithmetic number, because the mean of its divisors is an integer number (201022066).

Almost surely, 2^402044131 is an apocalyptic number.

402044131 is a deficient number, since it is larger than the sum of its proper divisors (1).

402044131 is an equidigital number, since it uses as much as digits as its factorization.

402044131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 402044131 is about 20051.0381526743. The cubic root of 402044131 is about 738.0592749398.

Adding to 402044131 its reverse (131440204), we get a palindrome (533484335).

The spelling of 402044131 in words is "four hundred two million, forty-four thousand, one hundred thirty-one".