43540741 has 4 divisors (see below), whose sum is σ = 43801632. Its totient is φ = 43279852.

The previous prime is 43540703. The next prime is 43540751. The reversal of 43540741 is 14704534.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43540741 is a prime.

It is a super-2 number, since 2×43540741² = 3791592253658162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43540751) 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, 130195 + ... + 130528.

It is an arithmetic number, because the mean of its divisors is an integer number (10950408).

Almost surely, 2^43540741 is an apocalyptic number.

It is an amenable number.

43540741 is a deficient number, since it is larger than the sum of its proper divisors (260891).

43540741 is a wasteful number, since it uses less digits than its factorization.

43540741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260890.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 43540741 is about 6598.5408235458. The cubic root of 43540741 is about 351.8022439692.

The spelling of 43540741 in words is "forty-three million, five hundred forty thousand, seven hundred forty-one".