423122140 has 48 divisors (see below), whose sum is σ = 1023289344. Its totient is φ = 143956800.

The previous prime is 423122137. The next prime is 423122201. The reversal of 423122140 is 41221324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6805 + ... + 29875.

It is an arithmetic number, because the mean of its divisors is an integer number (21318528).

Almost surely, 2^423122140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423122140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511644672).

423122140 is an abundant number, since it is smaller than the sum of its proper divisors (600167204).

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

423122140 is a wasteful number, since it uses less digits than its factorization.

423122140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23218 (or 23216 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 423122140 is about 20569.9329118984. The cubic root of 423122140 is about 750.7383188678.

Adding to 423122140 its reverse (41221324), we get a palindrome (464343464).

The spelling of 423122140 in words is "four hundred twenty-three million, one hundred twenty-two thousand, one hundred forty".