42672247 has 4 divisors (see below), whose sum is σ = 42690816. Its totient is φ = 42653680.

The previous prime is 42672241. The next prime is 42672251. The reversal of 42672247 is 74227624.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42672247 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 (42672241) 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, 5254 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (10672704).

Almost surely, 2^42672247 is an apocalyptic number.

42672247 is a deficient number, since it is larger than the sum of its proper divisors (18569).

42672247 is a wasteful number, since it uses less digits than its factorization.

42672247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18568.

The product of its digits is 37632, while the sum is 34.

The square root of 42672247 is about 6532.3997887453. The cubic root of 42672247 is about 349.4474191998.

The spelling of 42672247 in words is "forty-two million, six hundred seventy-two thousand, two hundred forty-seven".