42045912 has 64 divisors (see below), whose sum is σ = 119973600. Its totient is φ = 13633920.

The previous prime is 42045901. The next prime is 42045943. The reversal of 42045912 is 21954024.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5362 + ... + 10622.

Almost surely, 2^42045912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42045912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59986800).

42045912 is an abundant number, since it is smaller than the sum of its proper divisors (77927688).

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

42045912 is a wasteful number, since it uses less digits than its factorization.

42045912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5313 (or 5303 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 42045912 is about 6484.2819186090. The cubic root of 42045912 is about 347.7292781542.

Adding to 42045912 its reverse (21954024), we get a palindrome (63999936).

The spelling of 42045912 in words is "forty-two million, forty-five thousand, nine hundred twelve".