423495540 has 144 divisors (see below), whose sum is σ = 1434870528. Its totient is φ = 104229504.

The previous prime is 423495539. The next prime is 423495547. The reversal of 423495540 is 45594324.

It is a happy number.

423495540 is a `hidden beast` number, since 4 + 23 + 4 + 95 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 423495495 and 423495504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423495547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59829 + ... + 66531.

Almost surely, 2^423495540 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 423495540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717435264).

423495540 is an abundant number, since it is smaller than the sum of its proper divisors (1011374988).

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

423495540 is a wasteful number, since it uses less digits than its factorization.

423495540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6740 (or 6726 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 423495540 is about 20579.0072646860. The cubic root of 423495540 is about 750.9590929980.

It can be divided in two parts, 42 and 3495540, that multiplied together give a triangular number (146812680 = T₁₇₁₃₅).

The spelling of 423495540 in words is "four hundred twenty-three million, four hundred ninety-five thousand, five hundred forty".