420868953 has 12 divisors (see below), whose sum is σ = 630437808. Its totient is φ = 280579140.

The previous prime is 420868939. The next prime is 420868957. The reversal of 420868953 is 359868024.

It is not a de Polignac number, because 420868953 - 2⁴ = 420868937 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 420868899 and 420868908.

It is not an unprimeable number, because it can be changed into a prime (420868957) 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, 865743 + ... + 866228.

It is an arithmetic number, because the mean of its divisors is an integer number (52536484).

Almost surely, 2^420868953 is an apocalyptic number.

It is an amenable number.

420868953 is a deficient number, since it is larger than the sum of its proper divisors (209568855).

420868953 is an equidigital number, since it uses as much as digits as its factorization.

420868953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731986 (or 1731974 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 420868953 is about 20515.0908601449. The cubic root of 420868953 is about 749.4033494701.

It can be divided in two parts, 420868 and 953, that added together give a triangular number (421821 = T₉₁₈).

The spelling of 420868953 in words is "four hundred twenty million, eight hundred sixty-eight thousand, nine hundred fifty-three".