42002989 has 4 divisors (see below), whose sum is σ = 48003424. Its totient is φ = 36002556.

The previous prime is 42002969. The next prime is 42002993. The reversal of 42002989 is 98920024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42002989 - 2¹¹ = 42000941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42002929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000207 + ... + 3000220.

It is an arithmetic number, because the mean of its divisors is an integer number (12000856).

Almost surely, 2^42002989 is an apocalyptic number.

It is an amenable number.

42002989 is a deficient number, since it is larger than the sum of its proper divisors (6000435).

42002989 is an equidigital number, since it uses as much as digits as its factorization.

42002989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6000434.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 42002989 is about 6480.9713006617. The cubic root of 42002989 is about 347.6109102007.

The spelling of 42002989 in words is "forty-two million, two thousand, nine hundred eighty-nine".