423450321240 has 32 divisors (see below), whose sum is σ = 1270350964080. Its totient is φ = 112920085632.

The previous prime is 423450321233. The next prime is 423450321253. The reversal of 423450321240 is 42123054324.

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 = 423450321198 and 423450321207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1764376219 + ... + 1764376458.

Almost surely, 2^423450321240 is an apocalyptic number.

423450321240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423450321240 is an abundant number, since it is smaller than the sum of its proper divisors (846900642840).

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

423450321240 is a wasteful number, since it uses less digits than its factorization.

423450321240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528752691 (or 3528752687 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 423450321240 its reverse (42123054324), we get a palindrome (465573375564).

The spelling of 423450321240 in words is "four hundred twenty-three billion, four hundred fifty million, three hundred twenty-one thousand, two hundred forty".