542406 has 8 divisors (see below), whose sum is σ = 1084824. Its totient is φ = 180800.

The previous prime is 542401. The next prime is 542441. The reversal of 542406 is 604245.

It is a happy number.

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

542406 is an admirable number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45195 + ... + 45206.

It is an arithmetic number, because the mean of its divisors is an integer number (135603).

2⁵⁴²⁴⁰⁶ is an apocalyptic number.

542406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

542406 is a wasteful number, since it uses less digits than its factorization.

542406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90406.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 542406 is about 736.4821790105. The cubic root of 542406 is about 81.5532917042.

The spelling of 542406 in words is "five hundred forty-two thousand, four hundred six".