42388417 has 4 divisors (see below), whose sum is σ = 42402816. Its totient is φ = 42374020.

The previous prime is 42388403. The next prime is 42388457. The reversal of 42388417 is 71488324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42388417 - 2¹¹ = 42386369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42388457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009 + ... + 9262.

It is an arithmetic number, because the mean of its divisors is an integer number (10600704).

Almost surely, 2^42388417 is an apocalyptic number.

It is an amenable number.

42388417 is a deficient number, since it is larger than the sum of its proper divisors (14399).

42388417 is a wasteful number, since it uses less digits than its factorization.

42388417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14398.

The product of its digits is 43008, while the sum is 37.

The square root of 42388417 is about 6510.6387551453. The cubic root of 42388417 is about 348.6709240345.

The spelling of 42388417 in words is "forty-two million, three hundred eighty-eight thousand, four hundred seventeen".