423532140 has 48 divisors (see below), whose sum is σ = 1190128128. Its totient is φ = 112538304.

The previous prime is 423532127. The next prime is 423532147. The reversal of 423532140 is 41235324.

It is a super-2 number, since 2×423532140² = 358758947225959200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 423532140.

It is not an unprimeable number, because it can be changed into a prime (423532147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4509 + ... + 29451.

It is an arithmetic number, because the mean of its divisors is an integer number (24794336).

Almost surely, 2^423532140 is an apocalyptic number.

It is an amenable number.

423532140 is an abundant number, since it is smaller than the sum of its proper divisors (766595988).

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

423532140 is a wasteful number, since it uses less digits than its factorization.

423532140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25238 (or 25236 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 423532140 is about 20579.8965011975. The cubic root of 423532140 is about 750.9807258989.

Adding to 423532140 its reverse (41235324), we get a palindrome (464767464).

The spelling of 423532140 in words is "four hundred twenty-three million, five hundred thirty-two thousand, one hundred forty".