542680 has 16 divisors (see below), whose sum is σ = 1221120. Its totient is φ = 217056.

The previous prime is 542603. The next prime is 542683. The reversal of 542680 is 86245.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542683) by changing a digit.

542680 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6744 + ... + 6823.

It is an arithmetic number, because the mean of its divisors is an integer number (76320).

2⁵⁴²⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

542680 is an abundant number, since it is smaller than the sum of its proper divisors (678440).

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

542680 is a wasteful number, since it uses less digits than its factorization.

542680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13578 (or 13574 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 542680 is about 736.6681749607. The cubic root of 542680 is about 81.5670217885.

The spelling of 542680 in words is "five hundred forty-two thousand, six hundred eighty".