42002709 has 16 divisors (see below), whose sum is σ = 65055360. Its totient is φ = 23607360.

The previous prime is 42002707. The next prime is 42002713. The reversal of 42002709 is 90720024.

It is not a de Polignac number, because 42002709 - 2¹ = 42002707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42002707) 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, 15114 + ... + 17675.

It is an arithmetic number, because the mean of its divisors is an integer number (4065960).

Almost surely, 2^42002709 is an apocalyptic number.

It is an amenable number.

42002709 is a deficient number, since it is larger than the sum of its proper divisors (23052651).

42002709 is a wasteful number, since it uses less digits than its factorization.

42002709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32860.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 42002709 is about 6480.9496989253. The cubic root of 42002709 is about 347.6101377853.

The spelling of 42002709 in words is "forty-two million, two thousand, seven hundred nine".