420951253 has 4 divisors (see below), whose sum is σ = 428086080. Its totient is φ = 413816428.

The previous prime is 420951247. The next prime is 420951259. The reversal of 420951253 is 352159024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (420951247) and next prime (420951259).

It is a cyclic number.

It is not a de Polignac number, because 420951253 - 2⁹ = 420950741 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 (420951259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3567325 + ... + 3567442.

It is an arithmetic number, because the mean of its divisors is an integer number (107021520).

Almost surely, 2^420951253 is an apocalyptic number.

It is an amenable number.

420951253 is a deficient number, since it is larger than the sum of its proper divisors (7134827).

420951253 is an equidigital number, since it uses as much as digits as its factorization.

420951253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134826.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 420951253 is about 20517.0966025898. The cubic root of 420951253 is about 749.4521943464.

The spelling of 420951253 in words is "four hundred twenty million, nine hundred fifty-one thousand, two hundred fifty-three".