42840707 has 16 divisors (see below), whose sum is σ = 53457600. Its totient is φ = 33426432.

The previous prime is 42840703. The next prime is 42840719. The reversal of 42840707 is 70704824.

It is not a de Polignac number, because 42840707 - 2² = 42840703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42840701) 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, 3419 + ... + 9867.

It is an arithmetic number, because the mean of its divisors is an integer number (3341100).

Almost surely, 2^42840707 is an apocalyptic number.

42840707 is a deficient number, since it is larger than the sum of its proper divisors (10616893).

42840707 is a wasteful number, since it uses less digits than its factorization.

42840707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6542.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 42840707 is about 6545.2812773784. The cubic root of 42840707 is about 349.9066608245.

The spelling of 42840707 in words is "forty-two million, eight hundred forty thousand, seven hundred seven".