253430406421 has 8 divisors (see below), whose sum is σ = 253963745280. Its totient is φ = 252897349488.

The previous prime is 253430406413. The next prime is 253430406433. The reversal of 253430406421 is 124604034352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253430406421 - 2³ = 253430406413 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 (253430406401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1780140 + ... + 1917226.

It is an arithmetic number, because the mean of its divisors is an integer number (31745468160).

Almost surely, 2^253430406421 is an apocalyptic number.

It is an amenable number.

253430406421 is a deficient number, since it is larger than the sum of its proper divisors (533338859).

253430406421 is a wasteful number, since it uses less digits than its factorization.

253430406421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140963.

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 253430406421 in words is "two hundred fifty-three billion, four hundred thirty million, four hundred six thousand, four hundred twenty-one".