406423542 has 24 divisors (see below), whose sum is σ = 945557496. Its totient is φ = 116120928.

The previous prime is 406423499. The next prime is 406423543. The reversal of 406423542 is 245324604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406423543) 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, 690903 + ... + 691490.

It is an arithmetic number, because the mean of its divisors is an integer number (39398229).

Almost surely, 2^406423542 is an apocalyptic number.

406423542 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

406423542 is an abundant number, since it is smaller than the sum of its proper divisors (539133954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406423542 is a wasteful number, since it uses less digits than its factorization.

406423542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382412 (or 1382405 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 406423542 is about 20159.9489582687. The cubic root of 406423542 is about 740.7294620871.

The spelling of 406423542 in words is "four hundred six million, four hundred twenty-three thousand, five hundred forty-two".