43981742 has 8 divisors (see below), whose sum is σ = 75397296. Its totient is φ = 18849312.

The previous prime is 43981739. The next prime is 43981757. The reversal of 43981742 is 24718934.

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

It is a junction number, because it is equal to n+sod(n) for n = 43981696 and 43981705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1570763 + ... + 1570790.

It is an arithmetic number, because the mean of its divisors is an integer number (9424662).

Almost surely, 2^43981742 is an apocalyptic number.

43981742 is a deficient number, since it is larger than the sum of its proper divisors (31415554).

43981742 is a wasteful number, since it uses less digits than its factorization.

43981742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141562.

The product of its digits is 48384, while the sum is 38.

The square root of 43981742 is about 6631.8731893787. The cubic root of 43981742 is about 352.9859956405.

The spelling of 43981742 in words is "forty-three million, nine hundred eighty-one thousand, seven hundred forty-two".