42312247 has 8 divisors (see below), whose sum is σ = 43845840. Its totient is φ = 40783680.

The previous prime is 42312239. The next prime is 42312299. The reversal of 42312247 is 74221324.

It is a happy number.

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 42312247 - 2³ = 42312239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42312217) 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, 26872 + ... + 28402.

It is an arithmetic number, because the mean of its divisors is an integer number (5480730).

Almost surely, 2^42312247 is an apocalyptic number.

42312247 is a deficient number, since it is larger than the sum of its proper divisors (1533593).

42312247 is a wasteful number, since it uses less digits than its factorization.

42312247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513.

The product of its digits is 2688, while the sum is 25.

The square root of 42312247 is about 6504.7864684400. The cubic root of 42312247 is about 348.4619503726.

The spelling of 42312247 in words is "forty-two million, three hundred twelve thousand, two hundred forty-seven".