5251090042 has 32 divisors (see below), whose sum is σ = 8686814400. Its totient is φ = 2360793600.

The previous prime is 5251090027. The next prime is 5251090073. The reversal of 5251090042 is 2400901525.

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 15 ways as a sum of consecutive naturals, for example, 1655434 + ... + 1658602.

It is an arithmetic number, because the mean of its divisors is an integer number (271462950).

Almost surely, 2^5251090042 is an apocalyptic number.

5251090042 is a deficient number, since it is larger than the sum of its proper divisors (3435724358).

5251090042 is a wasteful number, since it uses less digits than its factorization.

5251090042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3982.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 5251090042 is about 72464.4053449692. The cubic root of 5251090042 is about 1738.1336003109.

Adding to 5251090042 its reverse (2400901525), we get a palindrome (7651991567).

The spelling of 5251090042 in words is "five billion, two hundred fifty-one million, ninety thousand, forty-two".