157340929 has 2 divisors, whose sum is σ = 157340930. Its totient is φ = 157340928.

The previous prime is 157340923. The next prime is 157340959. The reversal of 157340929 is 929043751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94614529 + 62726400 = 9727^2 + 7920^2 .

It is a cyclic number.

It is not a de Polignac number, because 157340929 - 2¹³ = 157332737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157340891 and 157340900.

It is not a weakly prime, because it can be changed into another prime (157340923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78670464 + 78670465.

It is an arithmetic number, because the mean of its divisors is an integer number (78670465).

Almost surely, 2^157340929 is an apocalyptic number.

It is an amenable number.

157340929 is a deficient number, since it is larger than the sum of its proper divisors (1).

157340929 is an equidigital number, since it uses as much as digits as its factorization.

157340929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 157340929 is about 12543.5612566767. The cubic root of 157340929 is about 539.8592786039.

The spelling of 157340929 in words is "one hundred fifty-seven million, three hundred forty thousand, nine hundred twenty-nine".