423404440032 has 48 divisors (see below), whose sum is σ = 1270213322112. Its totient is φ = 120972696960.

The previous prime is 423404439977. The next prime is 423404440091. The reversal of 423404440032 is 230044404324.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×423404440032² (a number of 24 digits) contains 22 as substring.

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, 315032394 + ... + 315033737.

It is an arithmetic number, because the mean of its divisors is an integer number (26462777544).

Almost surely, 2^423404440032 is an apocalyptic number.

423404440032 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

423404440032 is an abundant number, since it is smaller than the sum of its proper divisors (846808882080).

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

423404440032 is a wasteful number, since it uses less digits than its factorization.

423404440032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630066151 (or 630066143 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 423404440032 its reverse (230044404324), we get a palindrome (653448844356).

The spelling of 423404440032 in words is "four hundred twenty-three billion, four hundred four million, four hundred forty thousand, thirty-two".