2551456042 has 8 divisors (see below), whose sum is σ = 3827803716. Its totient is φ = 1275521472.

The previous prime is 2551455997. The next prime is 2551456051. The reversal of 2551456042 is 2406541552.

It can be written as a sum of positive squares in 2 ways, for example, as 2535223201 + 16232841 = 50351^2 + 4029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2551455989 and 2551456007.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87343 + ... + 112834.

Almost surely, 2^2551456042 is an apocalyptic number.

2551456042 is a deficient number, since it is larger than the sum of its proper divisors (1276347674).

2551456042 is a wasteful number, since it uses less digits than its factorization.

2551456042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206552.

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 2551456042 is about 50511.9395984751. The cubic root of 2551456042 is about 1366.4571900104.

Adding to 2551456042 its reverse (2406541552), we get a palindrome (4957997594).

The spelling of 2551456042 in words is "two billion, five hundred fifty-one million, four hundred fifty-six thousand, forty-two".