42407817 has 16 divisors (see below), whose sum is σ = 58728768. Its totient is φ = 27198720.

The previous prime is 42407801. The next prime is 42407819. The reversal of 42407817 is 71870424.

It is not a de Polignac number, because 42407817 - 2⁴ = 42407801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42407819) 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, 6618 + ... + 11340.

It is an arithmetic number, because the mean of its divisors is an integer number (3670548).

Almost surely, 2^42407817 is an apocalyptic number.

It is an amenable number.

42407817 is a deficient number, since it is larger than the sum of its proper divisors (16320951).

42407817 is a wasteful number, since it uses less digits than its factorization.

42407817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 42407817 is about 6512.1284538928. The cubic root of 42407817 is about 348.7241082511.

The spelling of 42407817 in words is "forty-two million, four hundred seven thousand, eight hundred seventeen".