408180542 has 32 divisors (see below), whose sum is σ = 769215744. Its totient is φ = 157809600.

The previous prime is 408180541. The next prime is 408180551. The reversal of 408180542 is 245081804.

It is a happy number.

It is a super-2 number, since 2×408180542² = 333222709734827528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 408180499 and 408180508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408180541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10058 + ... + 30290.

It is an arithmetic number, because the mean of its divisors is an integer number (24037992).

Almost surely, 2^408180542 is an apocalyptic number.

408180542 is a deficient number, since it is larger than the sum of its proper divisors (361035202).

408180542 is a wasteful number, since it uses less digits than its factorization.

408180542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20384.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 408180542 is about 20203.4784628786. The cubic root of 408180542 is about 741.7953376106.

The spelling of 408180542 in words is "four hundred eight million, one hundred eighty thousand, five hundred forty-two".