2542426642 has 24 divisors (see below), whose sum is σ = 4519987596. Its totient is φ = 1069050528.

The previous prime is 2542426637. The next prime is 2542426657. The reversal of 2542426642 is 2466242452.

It can be written as a sum of positive squares in 2 ways, for example, as 2530995481 + 11431161 = 50309^2 + 3381^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239553 + ... + 249940.

Almost surely, 2^2542426642 is an apocalyptic number.

2542426642 is a deficient number, since it is larger than the sum of its proper divisors (1977560954).

2542426642 is a wasteful number, since it uses less digits than its factorization.

2542426642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489562 (or 489555 counting only the distinct ones).

The product of its digits is 184320, while the sum is 37.

The square root of 2542426642 is about 50422.4815137058. The cubic root of 2542426642 is about 1364.8433569974.

The spelling of 2542426642 in words is "two billion, five hundred forty-two million, four hundred twenty-six thousand, six hundred forty-two".