157642039 has 2 divisors, whose sum is σ = 157642040. Its totient is φ = 157642038.

The previous prime is 157642033. The next prime is 157642049. The reversal of 157642039 is 930246751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157642039 - 2²⁷ = 23424311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157641989 and 157642007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157642033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78821019 + 78821020.

It is an arithmetic number, because the mean of its divisors is an integer number (78821020).

Almost surely, 2^157642039 is an apocalyptic number.

157642039 is a deficient number, since it is larger than the sum of its proper divisors (1).

157642039 is an equidigital number, since it uses as much as digits as its factorization.

157642039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 157642039 is about 12555.5580919368. The cubic root of 157642039 is about 540.2034430056.

The spelling of 157642039 in words is "one hundred fifty-seven million, six hundred forty-two thousand, thirty-nine".