42911910 has 64 divisors (see below), whose sum is σ = 121176000. Its totient is φ = 10768896.

The previous prime is 42911881. The next prime is 42911917. The reversal of 42911910 is 1911924.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42911917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85 + ... + 9264.

It is an arithmetic number, because the mean of its divisors is an integer number (1893375).

Almost surely, 2^42911910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42911910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60588000).

42911910 is an abundant number, since it is smaller than the sum of its proper divisors (78264090).

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

42911910 is a wasteful number, since it uses less digits than its factorization.

42911910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9382 (or 9376 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 42911910 is about 6550.7182812269. The cubic root of 42911910 is about 350.1004065672.

The spelling of 42911910 in words is "forty-two million, nine hundred eleven thousand, nine hundred ten".