42937247 has 4 divisors (see below), whose sum is σ = 43104576. Its totient is φ = 42769920.

The previous prime is 42937241. The next prime is 42937253. The reversal of 42937247 is 74273924.

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

It is an interprime number because it is at equal distance from previous prime (42937241) and next prime (42937253).

It is a cyclic number.

It is not a de Polignac number, because 42937247 - 2⁶ = 42937183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42937247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42937241) 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, 83279 + ... + 83792.

It is an arithmetic number, because the mean of its divisors is an integer number (10776144).

Almost surely, 2^42937247 is an apocalyptic number.

42937247 is a deficient number, since it is larger than the sum of its proper divisors (167329).

42937247 is a wasteful number, since it uses less digits than its factorization.

42937247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167328.

The product of its digits is 84672, while the sum is 38.

The square root of 42937247 is about 6552.6519059080. The cubic root of 42937247 is about 350.1692976880.

The spelling of 42937247 in words is "forty-two million, nine hundred thirty-seven thousand, two hundred forty-seven".