74203139 has 2 divisors, whose sum is σ = 74203140. Its totient is φ = 74203138.

The previous prime is 74203133. The next prime is 74203159. The reversal of 74203139 is 93130247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74203139 - 2⁴ = 74203123 is a prime.

It is a super-2 number, since 2×74203139² = 11012211674906642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74203133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37101569 + 37101570.

It is an arithmetic number, because the mean of its divisors is an integer number (37101570).

Almost surely, 2^74203139 is an apocalyptic number.

74203139 is a deficient number, since it is larger than the sum of its proper divisors (1).

74203139 is an equidigital number, since it uses as much as digits as its factorization.

74203139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 74203139 is about 8614.1243896289. The cubic root of 74203139 is about 420.2174591954.

The spelling of 74203139 in words is "seventy-four million, two hundred three thousand, one hundred thirty-nine".