43542039 has 8 divisors (see below), whose sum is σ = 58654960. Its totient is φ = 28728576.

The previous prime is 43542019. The next prime is 43542043. The reversal of 43542039 is 93024534.

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

It is not a de Polignac number, because 43542039 - 2²³ = 35153431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43541997 and 43542015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43542019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74524 + ... + 75105.

It is an arithmetic number, because the mean of its divisors is an integer number (7331870).

Almost surely, 2^43542039 is an apocalyptic number.

43542039 is a deficient number, since it is larger than the sum of its proper divisors (15112921).

43542039 is a wasteful number, since it uses less digits than its factorization.

43542039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149729.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 43542039 is about 6598.6391778912. The cubic root of 43542039 is about 351.8057398121.

The spelling of 43542039 in words is "forty-three million, five hundred forty-two thousand, thirty-nine".