423004140 has 96 divisors (see below), whose sum is σ = 1417268160. Its totient is φ = 104122368.

The previous prime is 423004139. The next prime is 423004147. The reversal of 423004140 is 41400324.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (423004147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23109 + ... + 37148.

It is an arithmetic number, because the mean of its divisors is an integer number (14763210).

Almost surely, 2^423004140 is an apocalyptic number.

It is an amenable number.

423004140 is an abundant number, since it is smaller than the sum of its proper divisors (994264020).

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

423004140 is a wasteful number, since it uses less digits than its factorization.

423004140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60288 (or 60280 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 423004140 is about 20567.0644478010. The cubic root of 423004140 is about 750.6685239240.

Adding to 423004140 its reverse (41400324), we get a palindrome (464404464).

The spelling of 423004140 in words is "four hundred twenty-three million, four thousand, one hundred forty".