1252418421 has 16 divisors (see below), whose sum is σ = 1760076800. Its totient is φ = 789967728.

The previous prime is 1252418417. The next prime is 1252418467. The reversal of 1252418421 is 1248142521.

It is not a de Polignac number, because 1252418421 - 2² = 1252418417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252418411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30900 + ... + 58818.

It is an arithmetic number, because the mean of its divisors is an integer number (110004800).

Almost surely, 2^1252418421 is an apocalyptic number.

It is an amenable number.

1252418421 is a deficient number, since it is larger than the sum of its proper divisors (507658379).

1252418421 is a wasteful number, since it uses less digits than its factorization.

1252418421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28728.

The product of its digits is 5120, while the sum is 30.

The square root of 1252418421 is about 35389.5241702965. The cubic root of 1252418421 is about 1077.9116081491.

The spelling of 1252418421 in words is "one billion, two hundred fifty-two million, four hundred eighteen thousand, four hundred twenty-one".