42890380 has 24 divisors (see below), whose sum is σ = 96998832. Its totient is φ = 15836352.

The previous prime is 42890339. The next prime is 42890383. The reversal of 42890380 is 8309824.

It is not an unprimeable number, because it can be changed into a prime (42890383) 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, 82222 + ... + 82741.

It is an arithmetic number, because the mean of its divisors is an integer number (4041618).

Almost surely, 2^42890380 is an apocalyptic number.

It is an amenable number.

42890380 is an abundant number, since it is smaller than the sum of its proper divisors (54108452).

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

42890380 is a wasteful number, since it uses less digits than its factorization.

42890380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164985 (or 164983 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 42890380 is about 6549.0747438092. The cubic root of 42890380 is about 350.0418453370.

The spelling of 42890380 in words is "forty-two million, eight hundred ninety thousand, three hundred eighty".