423037440 has 480 divisors, whose sum is σ = 1741424256. Its totient is φ = 92897280.

The previous prime is 423037411. The next prime is 423037453. The reversal of 423037440 is 44730324.

It is a tau number, because it is divible by the number of its divisors (480).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6935010 + ... + 6935070.

Almost surely, 2^423037440 is an apocalyptic number.

423037440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423037440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870712128).

423037440 is an abundant number, since it is smaller than the sum of its proper divisors (1318386816).

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

423037440 is a wasteful number, since it uses less digits than its factorization.

423037440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 423037440 is about 20567.8739786104. The cubic root of 423037440 is about 750.6882216082.

Adding to 423037440 its reverse (44730324), we get a palindrome (467767764).

The spelling of 423037440 in words is "four hundred twenty-three million, thirty-seven thousand, four hundred forty".