156542 has 8 divisors (see below), whose sum is σ = 243000. Its totient is φ = 75544.

The previous prime is 156539. The next prime is 156577. The reversal of 156542 is 245651.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1292 + ... + 1407.

It is an arithmetic number, because the mean of its divisors is an integer number (30375).

2¹⁵⁶⁵⁴² is an apocalyptic number.

156542 is a deficient number, since it is larger than the sum of its proper divisors (86458).

156542 is a wasteful number, since it uses less digits than its factorization.

156542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730.

The product of its digits is 1200, while the sum is 23.

The square root of 156542 is about 395.6538891506. The cubic root of 156542 is about 53.8943981016.

The spelling of 156542 in words is "one hundred fifty-six thousand, five hundred forty-two".