157742 has 8 divisors (see below), whose sum is σ = 254856. Its totient is φ = 72792.

The previous prime is 157739. The next prime is 157747. The reversal of 157742 is 247751.

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 6067 = 157742 / (1 + 5 + 7 + 7 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157747) 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, 3008 + ... + 3059.

It is an arithmetic number, because the mean of its divisors is an integer number (31857).

2¹⁵⁷⁷⁴² is an apocalyptic number.

157742 is a deficient number, since it is larger than the sum of its proper divisors (97114).

157742 is a wasteful number, since it uses less digits than its factorization.

157742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6082.

The product of its digits is 1960, while the sum is 26.

The square root of 157742 is about 397.1674709741. The cubic root of 157742 is about 54.0317600090.

Subtracting 157742 from its reverse (247751), we obtain a palindrome (90009).

The spelling of 157742 in words is "one hundred fifty-seven thousand, seven hundred forty-two".