1542885137 has 2 divisors, whose sum is σ = 1542885138. Its totient is φ = 1542885136.

The previous prime is 1542885061. The next prime is 1542885143. The reversal of 1542885137 is 7315882451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1536326416 + 6558721 = 39196^2 + 2561^2 .

It is an emirp because it is prime and its reverse (7315882451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1542885137 - 2⁸ = 1542884881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1542885187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771442568 + 771442569.

It is an arithmetic number, because the mean of its divisors is an integer number (771442569).

Almost surely, 2^1542885137 is an apocalyptic number.

It is an amenable number.

1542885137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542885137 is an equidigital number, since it uses as much as digits as its factorization.

1542885137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 44.

The square root of 1542885137 is about 39279.5765888585. The cubic root of 1542885137 is about 1155.5210599749.

The spelling of 1542885137 in words is "one billion, five hundred forty-two million, eight hundred eighty-five thousand, one hundred thirty-seven".