157120739 has 2 divisors, whose sum is σ = 157120740. Its totient is φ = 157120738.

The previous prime is 157120727. The next prime is 157120801. The reversal of 157120739 is 937021751.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157120739 is a prime.

It is a super-2 number, since 2×157120739² = 49373853247812242, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 157120699 and 157120708.

It is not a weakly prime, because it can be changed into another prime (157110739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78560369 + 78560370.

It is an arithmetic number, because the mean of its divisors is an integer number (78560370).

Almost surely, 2^157120739 is an apocalyptic number.

157120739 is a deficient number, since it is larger than the sum of its proper divisors (1).

157120739 is an equidigital number, since it uses as much as digits as its factorization.

157120739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 157120739 is about 12534.7811708063. The cubic root of 157120739 is about 539.6073265533.

The spelling of 157120739 in words is "one hundred fifty-seven million, one hundred twenty thousand, seven hundred thirty-nine".