42399417 has 8 divisors (see below), whose sum is σ = 57599424. Its totient is φ = 27732848.

The previous prime is 42399407. The next prime is 42399433. The reversal of 42399417 is 71499324.

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 42399417 - 2⁶ = 42399353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42399407) 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, 133173 + ... + 133490.

It is an arithmetic number, because the mean of its divisors is an integer number (7199928).

Almost surely, 2^42399417 is an apocalyptic number.

It is an amenable number.

42399417 is a deficient number, since it is larger than the sum of its proper divisors (15200007).

42399417 is a wasteful number, since it uses less digits than its factorization.

42399417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266719.

The product of its digits is 54432, while the sum is 39.

The square root of 42399417 is about 6511.4834715294. The cubic root of 42399417 is about 348.7010820251.

The spelling of 42399417 in words is "forty-two million, three hundred ninety-nine thousand, four hundred seventeen".