42109032 has 96 divisors (see below), whose sum is σ = 124679520. Its totient is φ = 11813760.

The previous prime is 42109013. The next prime is 42109037. The reversal of 42109032 is 23090124.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (42109037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71443 + ... + 72029.

It is an arithmetic number, because the mean of its divisors is an integer number (1298745).

Almost surely, 2^42109032 is an apocalyptic number.

42109032 is a gapful number since it is divisible by the number (42) 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 42109032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62339760).

42109032 is an abundant number, since it is smaller than the sum of its proper divisors (82570488).

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

42109032 is a wasteful number, since it uses less digits than its factorization.

42109032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 42109032 is about 6489.1472475203. The cubic root of 42109032 is about 347.9031967502.

Adding to 42109032 its reverse (23090124), we get a palindrome (65199156).

The spelling of 42109032 in words is "forty-two million, one hundred nine thousand, thirty-two".