1564515042 has 16 divisors (see below), whose sum is σ = 3132244512. Its totient is φ = 520969280.

The previous prime is 1564515019. The next prime is 1564515059. The reversal of 1564515042 is 2405154651.

It is a junction number, because it is equal to n+sod(n) for n = 1564514994 and 1564515012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127584 + ... + 139307.

It is an arithmetic number, because the mean of its divisors is an integer number (195765282).

Almost surely, 2^1564515042 is an apocalyptic number.

1564515042 is an abundant number, since it is smaller than the sum of its proper divisors (1567729470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1564515042 is a wasteful number, since it uses less digits than its factorization.

1564515042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267873.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 1564515042 is about 39553.9510289427. The cubic root of 1564515042 is about 1160.8958206005.

Adding to 1564515042 its reverse (2405154651), we get a palindrome (3969669693).

The spelling of 1564515042 in words is "one billion, five hundred sixty-four million, five hundred fifteen thousand, forty-two".