1542310157 has 2 divisors, whose sum is σ = 1542310158. Its totient is φ = 1542310156.

The previous prime is 1542310141. The next prime is 1542310207. The reversal of 1542310157 is 7510132451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1541818756 + 491401 = 39266^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1542310157 - 2⁴ = 1542310141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1542310457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771155078 + 771155079.

It is an arithmetic number, because the mean of its divisors is an integer number (771155079).

Almost surely, 2^1542310157 is an apocalyptic number.

It is an amenable number.

1542310157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542310157 is an equidigital number, since it uses as much as digits as its factorization.

1542310157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1542310157 is about 39272.2568360923. The cubic root of 1542310157 is about 1155.3775012110.

The spelling of 1542310157 in words is "one billion, five hundred forty-two million, three hundred ten thousand, one hundred fifty-seven".