42819489 has 16 divisors (see below), whose sum is σ = 63603840. Its totient is φ = 28470960.

The previous prime is 42819433. The next prime is 42819509. The reversal of 42819489 is 98491824.

It is not a de Polignac number, because 42819489 - 2¹⁵ = 42786721 is a prime.

It is a super-2 number, since 2×42819489² = 3667017276442242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42819289) 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, 9484 + ... + 13250.

It is an arithmetic number, because the mean of its divisors is an integer number (3975240).

Almost surely, 2^42819489 is an apocalyptic number.

It is an amenable number.

42819489 is a deficient number, since it is larger than the sum of its proper divisors (20784351).

42819489 is a wasteful number, since it uses less digits than its factorization.

42819489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4197 (or 4191 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 42819489 is about 6543.6602142837. The cubic root of 42819489 is about 349.8488844238.

The spelling of 42819489 in words is "forty-two million, eight hundred nineteen thousand, four hundred eighty-nine".