42002279 has 4 divisors (see below), whose sum is σ = 45820680. Its totient is φ = 38183880.

The previous prime is 42002269. The next prime is 42002309. The reversal of 42002279 is 97220024.

42002279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42002279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42002239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1909184 + ... + 1909205.

It is an arithmetic number, because the mean of its divisors is an integer number (11455170).

Almost surely, 2^42002279 is an apocalyptic number.

42002279 is a deficient number, since it is larger than the sum of its proper divisors (3818401).

42002279 is a wasteful number, since it uses less digits than its factorization.

42002279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3818400.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 42002279 is about 6480.9165246900. The cubic root of 42002279 is about 347.6089515692.

The spelling of 42002279 in words is "forty-two million, two thousand, two hundred seventy-nine".