423772144 has 20 divisors (see below), whose sum is σ = 821447424. Its totient is φ = 211785728.

The previous prime is 423772123. The next prime is 423772147. The reversal of 423772144 is 441277324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423772147) 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, 38064 + ... + 47920.

Almost surely, 2^423772144 is an apocalyptic number.

It is an amenable number.

423772144 is a deficient number, since it is larger than the sum of its proper divisors (397675280).

423772144 is a wasteful number, since it uses less digits than its factorization.

423772144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12552 (or 12546 counting only the distinct ones).

The product of its digits is 37632, while the sum is 34.

The square root of 423772144 is about 20585.7267056570. The cubic root of 423772144 is about 751.1225524778.

It can be divided in two parts, 42377 and 2144, that added together give a square (44521 = 211²).

The spelling of 423772144 in words is "four hundred twenty-three million, seven hundred seventy-two thousand, one hundred forty-four".