40152139 has 2 divisors, whose sum is σ = 40152140. Its totient is φ = 40152138.

The previous prime is 40152131. The next prime is 40152179. The reversal of 40152139 is 93125104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40152139 - 2³ = 40152131 is a prime.

It is a super-2 number, since 2×40152139² = 3224388532550642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40152131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20076069 + 20076070.

It is an arithmetic number, because the mean of its divisors is an integer number (20076070).

Almost surely, 2^40152139 is an apocalyptic number.

40152139 is a deficient number, since it is larger than the sum of its proper divisors (1).

40152139 is an equidigital number, since it uses as much as digits as its factorization.

40152139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 40152139 is about 6336.5715493475. The cubic root of 40152139 is about 342.4282308286.

The spelling of 40152139 in words is "forty million, one hundred fifty-two thousand, one hundred thirty-nine".