74102131 has 2 divisors, whose sum is σ = 74102132. Its totient is φ = 74102130.

The previous prime is 74102117. The next prime is 74102137. The reversal of 74102131 is 13120147.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74102131 is a prime.

It is a super-2 number, since 2×74102131² = 10982251637482322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74102099 and 74102108.

It is not a weakly prime, because it can be changed into another prime (74102137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37051065 + 37051066.

It is an arithmetic number, because the mean of its divisors is an integer number (37051066).

Almost surely, 2^74102131 is an apocalyptic number.

74102131 is a deficient number, since it is larger than the sum of its proper divisors (1).

74102131 is an equidigital number, since it uses as much as digits as its factorization.

74102131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 74102131 is about 8608.2594640264. The cubic root of 74102131 is about 420.0267008724.

Adding to 74102131 its reverse (13120147), we get a palindrome (87222278).

The spelling of 74102131 in words is "seventy-four million, one hundred two thousand, one hundred thirty-one".