42479039 has 4 divisors (see below), whose sum is σ = 44977824. Its totient is φ = 39980256.

The previous prime is 42479033. The next prime is 42479081. The reversal of 42479039 is 93097424.

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

It is a cyclic number.

It is not a de Polignac number, because 42479039 - 2²⁰ = 41430463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42478993 and 42479011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42479033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1249367 + ... + 1249400.

It is an arithmetic number, because the mean of its divisors is an integer number (11244456).

Almost surely, 2^42479039 is an apocalyptic number.

42479039 is a deficient number, since it is larger than the sum of its proper divisors (2498785).

42479039 is a wasteful number, since it uses less digits than its factorization.

42479039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498784.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 42479039 is about 6517.5945716192. The cubic root of 42479039 is about 348.9192211575.

The spelling of 42479039 in words is "forty-two million, four hundred seventy-nine thousand, thirty-nine".