42110520 has 64 divisors (see below), whose sum is σ = 127595520. Its totient is φ = 11117184.

The previous prime is 42110507. The next prime is 42110569. The reversal of 42110520 is 2501124.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 42110520.

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, 10657 + ... + 14063.

It is an arithmetic number, because the mean of its divisors is an integer number (1993680).

Almost surely, 2^42110520 is an apocalyptic number.

42110520 is a gapful number since it is divisible by the number (40) 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 42110520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63797760).

42110520 is an abundant number, since it is smaller than the sum of its proper divisors (85485000).

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

42110520 is a wasteful number, since it uses less digits than its factorization.

42110520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524 (or 3520 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 42110520 is about 6489.2618994767. The cubic root of 42110520 is about 347.9072946348.

Adding to 42110520 its reverse (2501124), we get a palindrome (44611644).

The spelling of 42110520 in words is "forty-two million, one hundred ten thousand, five hundred twenty".