2564279142 has 64 divisors (see below), whose sum is σ = 5389922304. Its totient is φ = 812344320.

The previous prime is 2564279129. The next prime is 2564279149. The reversal of 2564279142 is 2419724652.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2564279094 and 2564279103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564279149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2624158 + ... + 2625134.

It is an arithmetic number, because the mean of its divisors is an integer number (84217536).

Almost surely, 2^2564279142 is an apocalyptic number.

2564279142 is an abundant number, since it is smaller than the sum of its proper divisors (2825643162).

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

2564279142 is a wasteful number, since it uses less digits than its factorization.

2564279142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253.

The product of its digits is 241920, while the sum is 42.

The square root of 2564279142 is about 50638.7118912004. The cubic root of 2564279142 is about 1368.7425444935.

The spelling of 2564279142 in words is "two billion, five hundred sixty-four million, two hundred seventy-nine thousand, one hundred forty-two".