507142729 has 2 divisors, whose sum is σ = 507142730. Its totient is φ = 507142728.

The previous prime is 507142723. The next prime is 507142747. The reversal of 507142729 is 927241705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 505575225 + 1567504 = 22485^2 + 1252^2 .

It is a cyclic number.

It is not a de Polignac number, because 507142729 - 2³ = 507142721 is a prime.

It is not a weakly prime, because it can be changed into another prime (507142721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253571364 + 253571365.

It is an arithmetic number, because the mean of its divisors is an integer number (253571365).

Almost surely, 2^507142729 is an apocalyptic number.

It is an amenable number.

507142729 is a deficient number, since it is larger than the sum of its proper divisors (1).

507142729 is an equidigital number, since it uses as much as digits as its factorization.

507142729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 507142729 is about 22519.8296840807. The cubic root of 507142729 is about 797.4621288804.

The spelling of 507142729 in words is "five hundred seven million, one hundred forty-two thousand, seven hundred twenty-nine".