42235644 has 24 divisors (see below), whose sum is σ = 107509248. Its totient is φ = 12798640.

The previous prime is 42235601. The next prime is 42235649. The reversal of 42235644 is 44653224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42235649) 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, 159852 + ... + 160115.

It is an arithmetic number, because the mean of its divisors is an integer number (4479552).

Almost surely, 2^42235644 is an apocalyptic number.

42235644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42235644 is an abundant number, since it is smaller than the sum of its proper divisors (65273604).

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

42235644 is a wasteful number, since it uses less digits than its factorization.

42235644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319985 (or 319983 counting only the distinct ones).

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

The square root of 42235644 is about 6498.8955984844. The cubic root of 42235644 is about 348.2515356773.

Adding to 42235644 its reverse (44653224), we get a palindrome (86888868).

The spelling of 42235644 in words is "forty-two million, two hundred thirty-five thousand, six hundred forty-four".