423522040 has 16 divisors (see below), whose sum is σ = 952924680. Its totient is φ = 169408800.

The previous prime is 423521981. The next prime is 423522053. The reversal of 423522040 is 40225324.

It is a congruent number.

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, 5293986 + ... + 5294065.

Almost surely, 2^423522040 is an apocalyptic number.

423522040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423522040 is an abundant number, since it is smaller than the sum of its proper divisors (529402640).

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

423522040 is a wasteful number, since it uses less digits than its factorization.

423522040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10588062 (or 10588058 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 423522040 is about 20579.6511146326. The cubic root of 423522040 is about 750.9747562884.

Adding to 423522040 its reverse (40225324), we get a palindrome (463747364).

The spelling of 423522040 in words is "four hundred twenty-three million, five hundred twenty-two thousand, forty".