42470217 has 16 divisors (see below), whose sum is σ = 64949760. Its totient is φ = 27399600.

The previous prime is 42470201. The next prime is 42470231. The reversal of 42470217 is 71207424.

It is a happy number.

It is not a de Polignac number, because 42470217 - 2⁴ = 42470201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42470237) 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, 24534 + ... + 26207.

It is an arithmetic number, because the mean of its divisors is an integer number (4059360).

Almost surely, 2^42470217 is an apocalyptic number.

It is an amenable number.

42470217 is a deficient number, since it is larger than the sum of its proper divisors (22479543).

42470217 is a wasteful number, since it uses less digits than its factorization.

42470217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50781 (or 50775 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 42470217 is about 6516.9177530486. The cubic root of 42470217 is about 348.8950650988.

The spelling of 42470217 in words is "forty-two million, four hundred seventy thousand, two hundred seventeen".