1551040501242 has 16 divisors (see below), whose sum is σ = 3144575263680. Its totient is φ = 509931123552.

The previous prime is 1551040501237. The next prime is 1551040501279. The reversal of 1551040501242 is 2421050401551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770593742 + ... + 1770594617.

It is an arithmetic number, because the mean of its divisors is an integer number (196535953980).

Almost surely, 2^{1551040501242} is an apocalyptic number.

1551040501242 is an abundant number, since it is smaller than the sum of its proper divisors (1593534762438).

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

1551040501242 is a wasteful number, since it uses less digits than its factorization.

1551040501242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541188437.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 1551040501242 its reverse (2421050401551), we get a palindrome (3972090902793).

The spelling of 1551040501242 in words is "one trillion, five hundred fifty-one billion, forty million, five hundred one thousand, two hundred forty-two".