42084889 has 16 divisors (see below), whose sum is σ = 52914816. Its totient is φ = 32786160.

The previous prime is 42084883. The next prime is 42084899. The reversal of 42084889 is 98848024.

It is not a de Polignac number, because 42084889 - 2⁷ = 42084761 is a prime.

It is a super-2 number, since 2×42084889² = 3542275764284642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42084883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7059 + ... + 11575.

It is an arithmetic number, because the mean of its divisors is an integer number (3307176).

Almost surely, 2^42084889 is an apocalyptic number.

It is an amenable number.

42084889 is a deficient number, since it is larger than the sum of its proper divisors (10829927).

42084889 is an equidigital number, since it uses as much as digits as its factorization.

42084889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4557 (or 4535 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 42084889 is about 6487.2867209643. The cubic root of 42084889 is about 347.8366945277.

The spelling of 42084889 in words is "forty-two million, eighty-four thousand, eight hundred eighty-nine".