156215342 has 4 divisors (see below), whose sum is σ = 234323016. Its totient is φ = 78107670.

The previous prime is 156215341. The next prime is 156215383. The reversal of 156215342 is 243512651.

156215342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243512651 = 37 ⋅6581423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156215341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39053834 + ... + 39053837.

It is an arithmetic number, because the mean of its divisors is an integer number (58580754).

Almost surely, 2^156215342 is an apocalyptic number.

156215342 is a deficient number, since it is larger than the sum of its proper divisors (78107674).

156215342 is an equidigital number, since it uses as much as digits as its factorization.

156215342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78107673.

The product of its digits is 7200, while the sum is 29.

The square root of 156215342 is about 12498.6136031161. The cubic root of 156215342 is about 538.5688464179.

Adding to 156215342 its reverse (243512651), we get a palindrome (399727993).

The spelling of 156215342 in words is "one hundred fifty-six million, two hundred fifteen thousand, three hundred forty-two".