423015140 has 12 divisors (see below), whose sum is σ = 888331836. Its totient is φ = 169206048.

The previous prime is 423015137. The next prime is 423015223. The reversal of 423015140 is 41510324.

It can be written as a sum of positive squares in 2 ways, for example, as 136796416 + 286218724 = 11696^2 + 16918^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 21150757 = 423015140 / (4 + 2 + 3 + 0 + 1 + 5 + 1 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10575359 + ... + 10575398.

It is an arithmetic number, because the mean of its divisors is an integer number (74027653).

Almost surely, 2^423015140 is an apocalyptic number.

It is an amenable number.

423015140 is an abundant number, since it is smaller than the sum of its proper divisors (465316696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423015140 is a wasteful number, since it uses less digits than its factorization.

423015140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21150766 (or 21150764 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 423015140 is about 20567.3318639050. The cubic root of 423015140 is about 750.6750307808.

Adding to 423015140 its reverse (41510324), we get a palindrome (464525464).

The spelling of 423015140 in words is "four hundred twenty-three million, fifteen thousand, one hundred forty".