420753123 has 20 divisors (see below), whose sum is σ = 718323760. Its totient is φ = 240430032.

The previous prime is 420753097. The next prime is 420753133. The reversal of 420753123 is 321357024.

It is not a de Polignac number, because 420753123 - 2⁸ = 420752867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (420753133) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 370468 + ... + 371601.

It is an arithmetic number, because the mean of its divisors is an integer number (35916188).

Almost surely, 2^420753123 is an apocalyptic number.

420753123 is a deficient number, since it is larger than the sum of its proper divisors (297570637).

420753123 is an equidigital number, since it uses as much as digits as its factorization.

420753123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742088 (or 742079 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 420753123 is about 20512.2676220841. The cubic root of 420753123 is about 749.3345938207.

The spelling of 420753123 in words is "four hundred twenty million, seven hundred fifty-three thousand, one hundred twenty-three".