423545340 has 96 divisors (see below), whose sum is σ = 1253387520. Its totient is φ = 106569216.

The previous prime is 423545329. The next prime is 423545351. The reversal of 423545340 is 43545324.

It is an interprime number because it is at equal distance from previous prime (423545329) and next prime (423545351).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 423545298 and 423545307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356227 + ... + 357413.

It is an arithmetic number, because the mean of its divisors is an integer number (13056120).

Almost surely, 2^423545340 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 423545340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626693760).

423545340 is an abundant number, since it is smaller than the sum of its proper divisors (829842180).

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

423545340 is a wasteful number, since it uses less digits than its factorization.

423545340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 423545340 is about 20580.2172000200. The cubic root of 423545340 is about 750.9885276229.

The spelling of 423545340 in words is "four hundred twenty-three million, five hundred forty-five thousand, three hundred forty".