42247471 has 4 divisors (see below), whose sum is σ = 48282832. Its totient is φ = 36212112.

The previous prime is 42247463. The next prime is 42247487. The reversal of 42247471 is 17474224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42247471 - 2³ = 42247463 is a prime.

It is a super-3 number, since 3×42247471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42247411) 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, 3017670 + ... + 3017683.

It is an arithmetic number, because the mean of its divisors is an integer number (12070708).

Almost surely, 2^42247471 is an apocalyptic number.

42247471 is a deficient number, since it is larger than the sum of its proper divisors (6035361).

42247471 is an equidigital number, since it uses as much as digits as its factorization.

42247471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6035360.

The product of its digits is 12544, while the sum is 31.

The square root of 42247471 is about 6499.8054586272. The cubic root of 42247471 is about 348.2840389228.

The spelling of 42247471 in words is "forty-two million, two hundred forty-seven thousand, four hundred seventy-one".