408724542 has 48 divisors (see below), whose sum is σ = 966725760. Its totient is φ = 129067992.

The previous prime is 408724517. The next prime is 408724543. The reversal of 408724542 is 245427804.

408724542 is a `hidden beast` number, since 40 + 8 + 72 + 4 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 408724497 and 408724506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408724543) 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, 12898 + ... + 31365.

It is an arithmetic number, because the mean of its divisors is an integer number (20140120).

Almost surely, 2^408724542 is an apocalyptic number.

408724542 is an abundant number, since it is smaller than the sum of its proper divisors (558001218).

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

408724542 is a wasteful number, since it uses less digits than its factorization.

408724542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44299 (or 44287 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 408724542 is about 20216.9370083601. The cubic root of 408724542 is about 742.1247323143.

The spelling of 408724542 in words is "four hundred eight million, seven hundred twenty-four thousand, five hundred forty-two".