157143242 has 24 divisors (see below), whose sum is σ = 247450368. Its totient is φ = 74803680.

The previous prime is 157143211. The next prime is 157143263. The reversal of 157143242 is 242341751.

157143242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 144023 + ... + 145109.

It is an arithmetic number, because the mean of its divisors is an integer number (10310432).

Almost surely, 2^157143242 is an apocalyptic number.

157143242 is a deficient number, since it is larger than the sum of its proper divisors (90307126).

157143242 is a wasteful number, since it uses less digits than its factorization.

157143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1173 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 157143242 is about 12535.6787610404. The cubic root of 157143242 is about 539.6330863693.

Adding to 157143242 its reverse (242341751), we get a palindrome (399484993).

The spelling of 157143242 in words is "one hundred fifty-seven million, one hundred forty-three thousand, two hundred forty-two".