542487 has 16 divisors (see below), whose sum is σ = 836352. Its totient is φ = 309120.

The previous prime is 542483. The next prime is 542489. The reversal of 542487 is 784245.

It is not a de Polignac number, because 542487 - 2² = 542483 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542483) 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, 78 + ... + 1044.

It is an arithmetic number, because the mean of its divisors is an integer number (52272).

2⁵⁴²⁴⁸⁷ is an apocalyptic number.

542487 is a deficient number, since it is larger than the sum of its proper divisors (293865).

542487 is a wasteful number, since it uses less digits than its factorization.

542487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998.

The product of its digits is 8960, while the sum is 30.

The square root of 542487 is about 736.5371681049. The cubic root of 542487 is about 81.5573510791.

The spelling of 542487 in words is "five hundred forty-two thousand, four hundred eighty-seven".