2542251642 has 64 divisors (see below), whose sum is σ = 6142540800. Its totient is φ = 685221120.

The previous prime is 2542251629. The next prime is 2542251653. The reversal of 2542251642 is 2461522452.

It is a super-2 number, since 2×2542251642² = 12926086822503392328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185709 + ... + 198927.

It is an arithmetic number, because the mean of its divisors is an integer number (95977200).

Almost surely, 2^2542251642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2542251642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3071270400).

2542251642 is an abundant number, since it is smaller than the sum of its proper divisors (3600289158).

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

2542251642 is a wasteful number, since it uses less digits than its factorization.

2542251642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13491.

The product of its digits is 38400, while the sum is 33.

The square root of 2542251642 is about 50420.7461467995. The cubic root of 2542251642 is about 1364.8120413685.

The spelling of 2542251642 in words is "two billion, five hundred forty-two million, two hundred fifty-one thousand, six hundred forty-two".