74406131 has 2 divisors, whose sum is σ = 74406132. Its totient is φ = 74406130.

The previous prime is 74406121. The next prime is 74406179. The reversal of 74406131 is 13160447.

It is a weak prime.

It is an emirp because it is prime and its reverse (13160447) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74406131 is a prime.

It is a super-2 number, since 2×74406131² = 11072544660778322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74406131.

It is not a weakly prime, because it can be changed into another prime (74406121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37203065 + 37203066.

It is an arithmetic number, because the mean of its divisors is an integer number (37203066).

Almost surely, 2^74406131 is an apocalyptic number.

74406131 is a deficient number, since it is larger than the sum of its proper divisors (1).

74406131 is an equidigital number, since it uses as much as digits as its factorization.

74406131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 74406131 is about 8625.8988517139. The cubic root of 74406131 is about 420.6002961749.

Adding to 74406131 its reverse (13160447), we get a palindrome (87566578).

The spelling of 74406131 in words is "seventy-four million, four hundred six thousand, one hundred thirty-one".