157371242 has 12 divisors (see below), whose sum is σ = 274596930. Its totient is φ = 67444776.

The previous prime is 157371211. The next prime is 157371259. The reversal of 157371242 is 242173751.

It can be written as a sum of positive squares in only one way, i.e., 151265401 + 6105841 = 12299^2 + 2471^2 .

It is a junction number, because it is equal to n+sod(n) for n = 157371199 and 157371208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 802817 + ... + 803012.

Almost surely, 2^157371242 is an apocalyptic number.

157371242 is a deficient number, since it is larger than the sum of its proper divisors (117225688).

157371242 is a wasteful number, since it uses less digits than its factorization.

157371242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605845 (or 1605838 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 157371242 is about 12544.7695076474. The cubic root of 157371242 is about 539.8939457936.

The spelling of 157371242 in words is "one hundred fifty-seven million, three hundred seventy-one thousand, two hundred forty-two".