423820156 has 24 divisors (see below), whose sum is σ = 785912960. Its totient is φ = 199422000.

The previous prime is 423820153. The next prime is 423820247. The reversal of 423820156 is 651028324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423820151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6990 + ... + 29941.

Almost surely, 2^423820156 is an apocalyptic number.

It is an amenable number.

423820156 is a deficient number, since it is larger than the sum of its proper divisors (362092804).

423820156 is a wasteful number, since it uses less digits than its factorization.

423820156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37105 (or 37103 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 423820156 is about 20586.8928204331. The cubic root of 423820156 is about 751.1509179840.

The spelling of 423820156 in words is "four hundred twenty-three million, eight hundred twenty thousand, one hundred fifty-six".