42233440 has 48 divisors (see below), whose sum is σ = 105652512. Its totient is φ = 15898624.

The previous prime is 42233419. The next prime is 42233449. The reversal of 42233440 is 4433224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42233449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5044 + ... + 10483.

It is an arithmetic number, because the mean of its divisors is an integer number (2201094).

Almost surely, 2^42233440 is an apocalyptic number.

42233440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42233440 is an abundant number, since it is smaller than the sum of its proper divisors (63419072).

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

42233440 is a wasteful number, since it uses less digits than its factorization.

42233440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15559 (or 15551 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 42233440 is about 6498.7260289998. The cubic root of 42233440 is about 348.2454779209.

Adding to 42233440 its reverse (4433224), we get a palindrome (46666664).

The spelling of 42233440 in words is "forty-two million, two hundred thirty-three thousand, four hundred forty".