42907869 has 12 divisors (see below), whose sum is σ = 62036416. Its totient is φ = 28578312.

The previous prime is 42907829. The next prime is 42907877. The reversal of 42907869 is 96870924.

It is a happy number.

It is not a de Polignac number, because 42907869 - 2⁹ = 42907357 is a prime.

It is a super-2 number, since 2×42907869² = 3682170444242322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42907829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14124 + ... + 16890.

Almost surely, 2^42907869 is an apocalyptic number.

It is an amenable number.

42907869 is a deficient number, since it is larger than the sum of its proper divisors (19128547).

42907869 is a wasteful number, since it uses less digits than its factorization.

42907869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496 (or 4493 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 42907869 is about 6550.4098345065. The cubic root of 42907869 is about 350.0894166100.

The spelling of 42907869 in words is "forty-two million, nine hundred seven thousand, eight hundred sixty-nine".