157820542 has 24 divisors (see below), whose sum is σ = 264498696. Its totient is φ = 70554000.

The previous prime is 157820513. The next prime is 157820557. The reversal of 157820542 is 245028751.

It is a happy number.

157820542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 157820498 and 157820507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9417 + ... + 20107.

It is an arithmetic number, because the mean of its divisors is an integer number (11020779).

Almost surely, 2^157820542 is an apocalyptic number.

157820542 is a deficient number, since it is larger than the sum of its proper divisors (106678154).

157820542 is a wasteful number, since it uses less digits than its factorization.

157820542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10776 (or 10765 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 157820542 is about 12562.6646058868. The cubic root of 157820542 is about 540.4072624998.

The spelling of 157820542 in words is "one hundred fifty-seven million, eight hundred twenty thousand, five hundred forty-two".