157142 has 4 divisors (see below), whose sum is σ = 235716. Its totient is φ = 78570.

The previous prime is 157141. The next prime is 157163. The reversal of 157142 is 241751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241751 = 151 ⋅1601.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39284 + ... + 39287.

It is an arithmetic number, because the mean of its divisors is an integer number (58929).

2¹⁵⁷¹⁴² is an apocalyptic number.

157142 is a deficient number, since it is larger than the sum of its proper divisors (78574).

157142 is an equidigital number, since it uses as much as digits as its factorization.

157142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78573.

The product of its digits is 280, while the sum is 20.

The square root of 157142 is about 396.4114024596. The cubic root of 157142 is about 53.9631664681.

Adding to 157142 its reverse (241751), we get a palindrome (398893).

The spelling of 157142 in words is "one hundred fifty-seven thousand, one hundred forty-two".