43140538 has 8 divisors (see below), whose sum is σ = 73955232. Its totient is φ = 18488796.

The previous prime is 43140529. The next prime is 43140547. The reversal of 43140538 is 83504134.

It is an interprime number because it is at equal distance from previous prime (43140529) and next prime (43140547).

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

It is a super-2 number, since 2×43140538² = 3722212037858888, which contains 22 as substring.

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, 1540720 + ... + 1540747.

It is an arithmetic number, because the mean of its divisors is an integer number (9244404).

Almost surely, 2^43140538 is an apocalyptic number.

43140538 is a deficient number, since it is larger than the sum of its proper divisors (30814694).

43140538 is a wasteful number, since it uses less digits than its factorization.

43140538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081476.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 43140538 is about 6568.1457048394. The cubic root of 43140538 is about 350.7210658296.

The spelling of 43140538 in words is "forty-three million, one hundred forty thousand, five hundred thirty-eight".