420704123 has 4 divisors (see below), whose sum is σ = 480804720. Its totient is φ = 360603528.

The previous prime is 420704107. The next prime is 420704143. The reversal of 420704123 is 321407024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420704123 - 2⁴ = 420704107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420704143) 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, 30050288 + ... + 30050301.

It is an arithmetic number, because the mean of its divisors is an integer number (120201180).

Almost surely, 2^420704123 is an apocalyptic number.

420704123 is a deficient number, since it is larger than the sum of its proper divisors (60100597).

420704123 is an equidigital number, since it uses as much as digits as its factorization.

420704123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60100596.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 420704123 is about 20511.0731801142. The cubic root of 420704123 is about 749.3055040620.

The spelling of 420704123 in words is "four hundred twenty million, seven hundred four thousand, one hundred twenty-three".