156542134 has 16 divisors (see below), whose sum is σ = 271756800. Its totient is φ = 66239784.

The previous prime is 156542119. The next prime is 156542143. The reversal of 156542134 is 431245651.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 156542096 and 156542105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69664 + ... + 71875.

It is an arithmetic number, because the mean of its divisors is an integer number (16984800).

Almost surely, 2^156542134 is an apocalyptic number.

156542134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

156542134 is a deficient number, since it is larger than the sum of its proper divisors (115214666).

156542134 is a wasteful number, since it uses less digits than its factorization.

156542134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141627.

The product of its digits is 14400, while the sum is 31.

The square root of 156542134 is about 12511.6799031945. The cubic root of 156542134 is about 538.9441347942.

Adding to 156542134 its reverse (431245651), we get a palindrome (587787785).

The spelling of 156542134 in words is "one hundred fifty-six million, five hundred forty-two thousand, one hundred thirty-four".