42989907 has 8 divisors (see below), whose sum is σ = 57367440. Its totient is φ = 28636160.

The previous prime is 42989899. The next prime is 42989917. The reversal of 42989907 is 70998924.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42989907 - 2³ = 42989899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42989917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1182 + ... + 9347.

It is an arithmetic number, because the mean of its divisors is an integer number (7170930).

Almost surely, 2^42989907 is an apocalyptic number.

42989907 is a deficient number, since it is larger than the sum of its proper divisors (14377533).

42989907 is a wasteful number, since it uses less digits than its factorization.

42989907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11893.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 42989907 is about 6556.6688951021. The cubic root of 42989907 is about 350.3123931987.

The spelling of 42989907 in words is "forty-two million, nine hundred eighty-nine thousand, nine hundred seven".