42232644 has 48 divisors (see below), whose sum is σ = 109885440. Its totient is φ = 14027040.

The previous prime is 42232643. The next prime is 42232657. The reversal of 42232644 is 44623224.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (42232643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40854 + ... + 41874.

It is an arithmetic number, because the mean of its divisors is an integer number (2289280).

Almost surely, 2^42232644 is an apocalyptic number.

It is an amenable number.

42232644 is an abundant number, since it is smaller than the sum of its proper divisors (67652796).

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

42232644 is a wasteful number, since it uses less digits than its factorization.

42232644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417 (or 1409 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 42232644 is about 6498.6647859387. The cubic root of 42232644 is about 348.2432900405.

Adding to 42232644 its reverse (44623224), we get a palindrome (86855868).

The spelling of 42232644 in words is "forty-two million, two hundred thirty-two thousand, six hundred forty-four".