542987 has 2 divisors, whose sum is σ = 542988. Its totient is φ = 542986.

The previous prime is 542981. The next prime is 542999. The reversal of 542987 is 789245.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542987 - 2⁶ = 542923 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (542981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271493 + 271494.

It is an arithmetic number, because the mean of its divisors is an integer number (271494).

2⁵⁴²⁹⁸⁷ is an apocalyptic number.

542987 is a deficient number, since it is larger than the sum of its proper divisors (1).

542987 is an equidigital number, since it uses as much as digits as its factorization.

542987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 542987 is about 736.8765161138. The cubic root of 542987 is about 81.5824000072.

The spelling of 542987 in words is "five hundred forty-two thousand, nine hundred eighty-seven".