157942001 has 16 divisors (see below), whose sum is σ = 182464128. Its totient is φ = 133920000.

The previous prime is 157941919. The next prime is 157942009. The reversal of 157942001 is 100249751.

It is a cyclic number.

It is not a de Polignac number, because 157942001 - 2¹⁴ = 157925617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (157942009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423251 + ... + 423623.

It is an arithmetic number, because the mean of its divisors is an integer number (11404008).

Almost surely, 2^157942001 is an apocalyptic number.

It is an amenable number.

157942001 is a deficient number, since it is larger than the sum of its proper divisors (24522127).

157942001 is a wasteful number, since it uses less digits than its factorization.

157942001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 157942001 is about 12567.4978018697. The cubic root of 157942001 is about 540.5458597822.

The spelling of 157942001 in words is "one hundred fifty-seven million, nine hundred forty-two thousand, one".