156206042 has 4 divisors (see below), whose sum is σ = 234309066. Its totient is φ = 78103020.

The previous prime is 156206033. The next prime is 156206069. The reversal of 156206042 is 240602651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240602651 = 113 ⋅2129227.

It can be written as a sum of positive squares in only one way, i.e., 81884401 + 74321641 = 9049^2 + 8621^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39051509 + ... + 39051512.

Almost surely, 2^156206042 is an apocalyptic number.

156206042 is a deficient number, since it is larger than the sum of its proper divisors (78103024).

156206042 is an equidigital number, since it uses as much as digits as its factorization.

156206042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78103023.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 156206042 is about 12498.2415563150. The cubic root of 156206042 is about 538.5581586292.

Adding to 156206042 its reverse (240602651), we get a palindrome (396808693).

The spelling of 156206042 in words is "one hundred fifty-six million, two hundred six thousand, forty-two".