423124040 has 32 divisors (see below), whose sum is σ = 963506880. Its totient is φ = 167209152.

The previous prime is 423124021. The next prime is 423124043. The reversal of 423124040 is 40421324.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (423124043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60404 + ... + 67043.

It is an arithmetic number, because the mean of its divisors is an integer number (30109590).

Almost surely, 2^423124040 is an apocalyptic number.

423124040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423124040 is an abundant number, since it is smaller than the sum of its proper divisors (540382840).

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

423124040 is a wasteful number, since it uses less digits than its factorization.

423124040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127541 (or 127537 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 423124040 is about 20569.9790957599. The cubic root of 423124040 is about 750.7394425785.

Adding to 423124040 its reverse (40421324), we get a palindrome (463545364).

The spelling of 423124040 in words is "four hundred twenty-three million, one hundred twenty-four thousand, forty".