157643042 has 16 divisors (see below), whose sum is σ = 240764832. Its totient is φ = 77400960.

The previous prime is 157643033. The next prime is 157643047. The reversal of 157643042 is 240346751.

It is not an unprimeable number, because it can be changed into a prime (157643047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22313 + ... + 28515.

It is an arithmetic number, because the mean of its divisors is an integer number (15047802).

Almost surely, 2^157643042 is an apocalyptic number.

157643042 is a deficient number, since it is larger than the sum of its proper divisors (83121790).

157643042 is a wasteful number, since it uses less digits than its factorization.

157643042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6433.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 157643042 is about 12555.5980343431. The cubic root of 157643042 is about 540.2045886875.

Adding to 157643042 its reverse (240346751), we get a palindrome (397989793).

The spelling of 157643042 in words is "one hundred fifty-seven million, six hundred forty-three thousand, forty-two".