420549723 has 24 divisors (see below), whose sum is σ = 701668656. Its totient is φ = 239884800.

The previous prime is 420549713. The next prime is 420549739. The reversal of 420549723 is 327945024.

420549723 is a `hidden beast` number, since 42 + 0 + 549 + 72 + 3 = 666.

It is not a de Polignac number, because 420549723 - 2⁴ = 420549707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420549713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123258 + ... + 126623.

It is an arithmetic number, because the mean of its divisors is an integer number (29236194).

Almost surely, 2^420549723 is an apocalyptic number.

420549723 is a deficient number, since it is larger than the sum of its proper divisors (281118933).

420549723 is a wasteful number, since it uses less digits than its factorization.

420549723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249915 (or 249912 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 420549723 is about 20507.3090141052. The cubic root of 420549723 is about 749.2138268637.

The spelling of 420549723 in words is "four hundred twenty million, five hundred forty-nine thousand, seven hundred twenty-three".