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542539 is a prime number
BaseRepresentation
bin10000100011101001011
31000120020001
42010131023
5114330124
615343431
74416514
oct2043513
91016201
10542539
11340688
12221b77
1315cc3a
14101a0b
15aab44
hex8474b

542539 has 2 divisors, whose sum is σ = 542540. Its totient is φ = 542538.

The previous prime is 542537. The next prime is 542551. The reversal of 542539 is 935245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542539 - 21 = 542537 is a prime.

Together with 542537, it forms a pair of twin primes.

It is a Chen prime.

542539 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (542533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271269 + 271270.

It is an arithmetic number, because the mean of its divisors is an integer number (271270).

2542539 is an apocalyptic number.

542539 is a deficient number, since it is larger than the sum of its proper divisors (1).

542539 is an equidigital number, since it uses as much as digits as its factorization.

542539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 28.

The square root of 542539 is about 736.5724675821. The cubic root of 542539 is about 81.5599568845.

It can be divided in two parts, 5425 and 39, that multiplied together give a triangular number (211575 = T650).

The spelling of 542539 in words is "five hundred forty-two thousand, five hundred thirty-nine".