43487242 has 8 divisors (see below), whose sum is σ = 66461796. Its totient is φ = 21333312.

The previous prime is 43487237. The next prime is 43487243. The reversal of 43487242 is 24278434.

It can be written as a sum of positive squares in 2 ways, for example, as 35652841 + 7834401 = 5971^2 + 2799^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×43487242² = 3782280433533128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43487198 and 43487207.

It is not an unprimeable number, because it can be changed into a prime (43487243) 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, 205023 + ... + 205234.

Almost surely, 2^43487242 is an apocalyptic number.

43487242 is a deficient number, since it is larger than the sum of its proper divisors (22974554).

43487242 is a wasteful number, since it uses less digits than its factorization.

43487242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410312.

The product of its digits is 43008, while the sum is 34.

The square root of 43487242 is about 6594.4857267265. The cubic root of 43487242 is about 351.6580971185.

The spelling of 43487242 in words is "forty-three million, four hundred eighty-seven thousand, two hundred forty-two".