156422234 has 4 divisors (see below), whose sum is σ = 234633354. Its totient is φ = 78211116.

The previous prime is 156422221. The next prime is 156422237. The reversal of 156422234 is 432224651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432224651 = 1213 ⋅356327.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 39025009 = 10835^2 + 6247^2 .

It is a junction number, because it is equal to n+sod(n) for n = 156422197 and 156422206.

It is not an unprimeable number, because it can be changed into a prime (156422237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39105557 + ... + 39105560.

Almost surely, 2^156422234 is an apocalyptic number.

156422234 is a deficient number, since it is larger than the sum of its proper divisors (78211120).

156422234 is an equidigital number, since it uses as much as digits as its factorization.

156422234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78211119.

The product of its digits is 11520, while the sum is 29.

The square root of 156422234 is about 12506.8874625144. The cubic root of 156422234 is about 538.8065021857.

Adding to 156422234 its reverse (432224651), we get a palindrome (588646885).

The spelling of 156422234 in words is "one hundred fifty-six million, four hundred twenty-two thousand, two hundred thirty-four".