542405656406 has 8 divisors (see below), whose sum is σ = 813613270800. Its totient is φ = 271201232808.

The previous prime is 542405656399. The next prime is 542405656453. The reversal of 542405656406 is 604656504245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×542405656406² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314081 + ... + 1087868.

It is an arithmetic number, because the mean of its divisors is an integer number (101701658850).

Almost surely, 2^542405656406 is an apocalyptic number.

542405656406 is a deficient number, since it is larger than the sum of its proper divisors (271207614394).

542405656406 is a wasteful number, since it uses less digits than its factorization.

542405656406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595398.

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 542405656406 in words is "five hundred forty-two billion, four hundred five million, six hundred fifty-six thousand, four hundred six".