43561942 has 8 divisors (see below), whose sum is σ = 66450600. Its totient is φ = 21411744.

The previous prime is 43561909. The next prime is 43561949. The reversal of 43561942 is 24916534.

It is a happy number.

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

It is a super-2 number, since 2×43561942² = 3795285581622728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43561898 and 43561907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43561949) 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, 184467 + ... + 184702.

It is an arithmetic number, because the mean of its divisors is an integer number (8306325).

Almost surely, 2^43561942 is an apocalyptic number.

43561942 is a deficient number, since it is larger than the sum of its proper divisors (22888658).

43561942 is a wasteful number, since it uses less digits than its factorization.

43561942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369230.

The product of its digits is 25920, while the sum is 34.

The square root of 43561942 is about 6600.1471195724. The cubic root of 43561942 is about 351.8593349369.

The spelling of 43561942 in words is "forty-three million, five hundred sixty-one thousand, nine hundred forty-two".