1251420045104 has 20 divisors (see below), whose sum is σ = 2426785433976. Its totient is φ = 625152836352.

The previous prime is 1251420045079. The next prime is 1251420045131. The reversal of 1251420045104 is 4015400241521.

It is a happy number.

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, 34805609 + ... + 34841544.

Almost surely, 2^{1251420045104} is an apocalyptic number.

It is an amenable number.

1251420045104 is a deficient number, since it is larger than the sum of its proper divisors (1175365388872).

1251420045104 is a wasteful number, since it uses less digits than its factorization.

1251420045104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69648284 (or 69648278 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 1251420045104 its reverse (4015400241521), we get a palindrome (5266820286625).

The spelling of 1251420045104 in words is "one trillion, two hundred fifty-one billion, four hundred twenty million, forty-five thousand, one hundred four".