157742975 has 12 divisors (see below), whose sum is σ = 210647976. Its totient is φ = 116486880.

The previous prime is 157742971. The next prime is 157742987. The reversal of 157742975 is 579247751.

It is not a de Polignac number, because 157742975 - 2² = 157742971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157742971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242357 + ... + 243006.

It is an arithmetic number, because the mean of its divisors is an integer number (17553998).

Almost surely, 2^157742975 is an apocalyptic number.

157742975 is a deficient number, since it is larger than the sum of its proper divisors (52905001).

157742975 is a wasteful number, since it uses less digits than its factorization.

157742975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485386 (or 485381 counting only the distinct ones).

The product of its digits is 617400, while the sum is 47.

The square root of 157742975 is about 12559.5770231326. The cubic root of 157742975 is about 540.3187133184.

The spelling of 157742975 in words is "one hundred fifty-seven million, seven hundred forty-two thousand, nine hundred seventy-five".