42039279 has 6 divisors (see below), whose sum is σ = 60723416. Its totient is φ = 28026180.

The previous prime is 42039271. The next prime is 42039287. The reversal of 42039279 is 97293024.

It is an interprime number because it is at equal distance from previous prime (42039271) and next prime (42039287).

It is not a de Polignac number, because 42039279 - 2³ = 42039271 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 (42039271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2335507 + ... + 2335524.

Almost surely, 2^42039279 is an apocalyptic number.

42039279 is a deficient number, since it is larger than the sum of its proper divisors (18684137).

42039279 is a wasteful number, since it uses less digits than its factorization.

42039279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671037 (or 4671034 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 42039279 is about 6483.7704308527. The cubic root of 42039279 is about 347.7109917185.

The spelling of 42039279 in words is "forty-two million, thirty-nine thousand, two hundred seventy-nine".