1250012421 has 12 divisors (see below), whose sum is σ = 2063512672. Its totient is φ = 714292776.

The previous prime is 1250012399. The next prime is 1250012443. The reversal of 1250012421 is 1242100521.

It is an interprime number because it is at equal distance from previous prime (1250012399) and next prime (1250012443).

It is not a de Polignac number, because 1250012421 - 2²² = 1245818117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1250012394 and 1250012403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250012471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9920671 + ... + 9920796.

Almost surely, 2^1250012421 is an apocalyptic number.

It is an amenable number.

1250012421 is a deficient number, since it is larger than the sum of its proper divisors (813500251).

1250012421 is a wasteful number, since it uses less digits than its factorization.

1250012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19841480 (or 19841477 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1250012421 is about 35355.5147183576. The cubic root of 1250012421 is about 1077.2209130352.

Adding to 1250012421 its reverse (1242100521), we get a palindrome (2492112942).

The spelling of 1250012421 in words is "one billion, two hundred fifty million, twelve thousand, four hundred twenty-one".