42247637 has 8 divisors (see below), whose sum is σ = 44014080. Its totient is φ = 40506480.

The previous prime is 42247633. The next prime is 42247643. The reversal of 42247637 is 73674224.

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 42247637 - 2² = 42247633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42247597 and 42247606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42247633) 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, 2873 + ... + 9630.

It is an arithmetic number, because the mean of its divisors is an integer number (5501760).

Almost surely, 2^42247637 is an apocalyptic number.

It is an amenable number.

42247637 is a deficient number, since it is larger than the sum of its proper divisors (1766443).

42247637 is a wasteful number, since it uses less digits than its factorization.

42247637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12643.

The product of its digits is 56448, while the sum is 35.

The square root of 42247637 is about 6499.8182282276. The cubic root of 42247637 is about 348.2844950849.

The spelling of 42247637 in words is "forty-two million, two hundred forty-seven thousand, six hundred thirty-seven".