1423120156 has 12 divisors (see below), whose sum is σ = 2492556192. Its totient is φ = 710961248.

The previous prime is 1423120151. The next prime is 1423120163. The reversal of 1423120156 is 6510213241.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1423120156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423120151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144340 + ... + 153883.

It is an arithmetic number, because the mean of its divisors is an integer number (207713016).

Almost surely, 2^1423120156 is an apocalyptic number.

It is an amenable number.

1423120156 is a deficient number, since it is larger than the sum of its proper divisors (1069436036).

1423120156 is a wasteful number, since it uses less digits than its factorization.

1423120156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299420 (or 299418 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1423120156 is about 37724.2648172234. The cubic root of 1423120156 is about 1124.8135081157.

Adding to 1423120156 its reverse (6510213241), we get a palindrome (7933333397).

The spelling of 1423120156 in words is "one billion, four hundred twenty-three million, one hundred twenty thousand, one hundred fifty-six".