43745427 has 40 divisors (see below), whose sum is σ = 73790640. Its totient is φ = 25583040.

The previous prime is 43745417. The next prime is 43745431. The reversal of 43745427 is 72454734.

43745427 is a `hidden beast` number, since 43 + 74 + 542 + 7 = 666.

It is not a de Polignac number, because 43745427 - 2¹⁶ = 43679891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43745391 and 43745400.

It is not an unprimeable number, because it can be changed into a prime (43745417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24993 + ... + 26685.

It is an arithmetic number, because the mean of its divisors is an integer number (1844766).

Almost surely, 2^43745427 is an apocalyptic number.

43745427 is a deficient number, since it is larger than the sum of its proper divisors (30045213).

43745427 is a wasteful number, since it uses less digits than its factorization.

43745427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745 (or 1736 counting only the distinct ones).

The product of its digits is 94080, while the sum is 36.

The square root of 43745427 is about 6614.0325823207. The cubic root of 43745427 is about 352.3526591099.

It can be divided in two parts, 4374 and 5427, that added together give a square (9801 = 99²).

The spelling of 43745427 in words is "forty-three million, seven hundred forty-five thousand, four hundred twenty-seven".