157102742 has 8 divisors (see below), whose sum is σ = 245900016. Its totient is φ = 75136072.

The previous prime is 157102733. The next prime is 157102747. The reversal of 157102742 is 247201751.

157102742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157102747) 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, 1707593 + ... + 1707684.

It is an arithmetic number, because the mean of its divisors is an integer number (30737502).

Almost surely, 2^157102742 is an apocalyptic number.

157102742 is a deficient number, since it is larger than the sum of its proper divisors (88797274).

157102742 is a wasteful number, since it uses less digits than its factorization.

157102742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415302.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 157102742 is about 12534.0632677516. The cubic root of 157102742 is about 539.5867231118.

Subtracting 157102742 from its reverse (247201751), we obtain a palindrome (90099009).

The spelling of 157102742 in words is "one hundred fifty-seven million, one hundred two thousand, seven hundred forty-two".