157942097 has 4 divisors (see below), whose sum is σ = 158114880. Its totient is φ = 157769316.

The previous prime is 157942063. The next prime is 157942123. The reversal of 157942097 is 790249751.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 157942097 - 2⁸ = 157941841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157942997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85013 + ... + 86850.

It is an arithmetic number, because the mean of its divisors is an integer number (39528720).

Almost surely, 2^157942097 is an apocalyptic number.

It is an amenable number.

157942097 is a deficient number, since it is larger than the sum of its proper divisors (172783).

157942097 is an equidigital number, since it uses as much as digits as its factorization.

157942097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172782.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 157942097 is about 12567.5016212452. The cubic root of 157942097 is about 540.5459693000.

The spelling of 157942097 in words is "one hundred fifty-seven million, nine hundred forty-two thousand, ninety-seven".