1251421140104 has 16 divisors (see below), whose sum is σ = 2347797347100. Its totient is φ = 625341847552.

The previous prime is 1251421140091. The next prime is 1251421140169. The reversal of 1251421140104 is 4010411241521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1100254144900 + 151166995204 = 1048930^2 + 388802^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46075889 + ... + 46103040.

Almost surely, 2^{1251421140104} is an apocalyptic number.

It is an amenable number.

1251421140104 is a deficient number, since it is larger than the sum of its proper divisors (1096376206996).

1251421140104 is a wasteful number, since it uses less digits than its factorization.

1251421140104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92180632 (or 92180628 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

Adding to 1251421140104 its reverse (4010411241521), we get a palindrome (5261832381625).

The spelling of 1251421140104 in words is "one trillion, two hundred fifty-one billion, four hundred twenty-one million, one hundred forty thousand, one hundred four".