157442737 has 8 divisors (see below), whose sum is σ = 162769376. Its totient is φ = 152191872.

The previous prime is 157442723. The next prime is 157442749. The reversal of 157442737 is 737244751.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157442737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157442737.

It is not an unprimeable number, because it can be changed into a prime (157442777) 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, 14703 + ... + 23044.

It is an arithmetic number, because the mean of its divisors is an integer number (20346172).

Almost surely, 2^157442737 is an apocalyptic number.

It is an amenable number.

157442737 is a deficient number, since it is larger than the sum of its proper divisors (5326639).

157442737 is an equidigital number, since it uses as much as digits as its factorization.

157442737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37887.

The product of its digits is 164640, while the sum is 40.

The square root of 157442737 is about 12547.6187780790. The cubic root of 157442737 is about 539.9756927788.

It can be divided in two parts, 15744 and 2737, that added together give a palindrome (18481).

The spelling of 157442737 in words is "one hundred fifty-seven million, four hundred forty-two thousand, seven hundred thirty-seven".