42489873 has 8 divisors (see below), whose sum is σ = 62948000. Its totient is φ = 28326564.

The previous prime is 42489841. The next prime is 42489877. The reversal of 42489873 is 37898424.

It is not a de Polignac number, because 42489873 - 2⁵ = 42489841 is a prime.

It is a super-2 number, since 2×42489873² = 3610778615112258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42489877) 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, 786823 + ... + 786876.

It is an arithmetic number, because the mean of its divisors is an integer number (7868500).

Almost surely, 2^42489873 is an apocalyptic number.

It is an amenable number.

42489873 is a deficient number, since it is larger than the sum of its proper divisors (20458127).

42489873 is a wasteful number, since it uses less digits than its factorization.

42489873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573708 (or 1573702 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 42489873 is about 6518.4256534841. The cubic root of 42489873 is about 348.9488818216.

The spelling of 42489873 in words is "forty-two million, four hundred eighty-nine thousand, eight hundred seventy-three".