1542679057 has 4 divisors (see below), whose sum is σ = 1562206720. Its totient is φ = 1523151396.

The previous prime is 1542679049. The next prime is 1542679111. The reversal of 1542679057 is 7509762451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7509762451 = 37549 ⋅199999.

It is a cyclic number.

It is not a de Polignac number, because 1542679057 - 2³ = 1542679049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1542678998 and 1542679016.

It is not an unprimeable number, because it can be changed into a prime (1542679007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9763713 + ... + 9763870.

It is an arithmetic number, because the mean of its divisors is an integer number (390551680).

Almost surely, 2^1542679057 is an apocalyptic number.

It is an amenable number.

1542679057 is a deficient number, since it is larger than the sum of its proper divisors (19527663).

1542679057 is an equidigital number, since it uses as much as digits as its factorization.

1542679057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19527662.

The product of its (nonzero) digits is 529200, while the sum is 46.

The square root of 1542679057 is about 39276.9532550579. The cubic root of 1542679057 is about 1155.4696108256.

The spelling of 1542679057 in words is "one billion, five hundred forty-two million, six hundred seventy-nine thousand, fifty-seven".