156142226 has 16 divisors (see below), whose sum is σ = 242085888. Its totient is φ = 75453600.

The previous prime is 156142219. The next prime is 156142243. The reversal of 156142226 is 622241651.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72911 + ... + 75021.

It is an arithmetic number, because the mean of its divisors is an integer number (15130368).

Almost surely, 2^156142226 is an apocalyptic number.

156142226 is a deficient number, since it is larger than the sum of its proper divisors (85943662).

156142226 is a wasteful number, since it uses less digits than its factorization.

156142226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337.

The product of its digits is 5760, while the sum is 29.

The square root of 156142226 is about 12495.6882963685. The cubic root of 156142226 is about 538.4848082681.

Adding to 156142226 its reverse (622241651), we get a palindrome (778383877).

The spelling of 156142226 in words is "one hundred fifty-six million, one hundred forty-two thousand, two hundred twenty-six".