42094840 has 32 divisors (see below), whose sum is σ = 95330880. Its totient is φ = 16728192.

The previous prime is 42094837. The next prime is 42094841. The reversal of 42094840 is 4849024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42094841) 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, 2929 + ... + 9631.

It is an arithmetic number, because the mean of its divisors is an integer number (2979090).

Almost surely, 2^42094840 is an apocalyptic number.

42094840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42094840 is an abundant number, since it is smaller than the sum of its proper divisors (53236040).

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

42094840 is a wasteful number, since it uses less digits than its factorization.

42094840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6871 (or 6867 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 42094840 is about 6488.0536372629. The cubic root of 42094840 is about 347.8641077731.

The spelling of 42094840 in words is "forty-two million, ninety-four thousand, eight hundred forty".