43242947 has 4 divisors (see below), whose sum is σ = 47174136. Its totient is φ = 39311760.

The previous prime is 43242943. The next prime is 43242959. The reversal of 43242947 is 74924234.

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 43242947 - 2² = 43242943 is a prime.

It is a super-4 number, since 4×43242947⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43242943) 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, 1965578 + ... + 1965599.

It is an arithmetic number, because the mean of its divisors is an integer number (11793534).

Almost surely, 2^43242947 is an apocalyptic number.

43242947 is a deficient number, since it is larger than the sum of its proper divisors (3931189).

43242947 is a wasteful number, since it uses less digits than its factorization.

43242947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931188.

The product of its digits is 48384, while the sum is 35.

The square root of 43242947 is about 6575.9369674595. The cubic root of 43242947 is about 350.9983658065.

The spelling of 43242947 in words is "forty-three million, two hundred forty-two thousand, nine hundred forty-seven".