43140038 has 4 divisors (see below), whose sum is σ = 64710060. Its totient is φ = 21570018.

The previous prime is 43140037. The next prime is 43140079. The reversal of 43140038 is 83004134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83004134 = 2 ⋅41502067.

It is a super-2 number, since 2×43140038² = 3722125757282888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43139995 and 43140022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43140037) 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 as a sum of consecutive naturals, namely, 10785008 + ... + 10785011.

It is an arithmetic number, because the mean of its divisors is an integer number (16177515).

Almost surely, 2^43140038 is an apocalyptic number.

43140038 is a deficient number, since it is larger than the sum of its proper divisors (21570022).

43140038 is a wasteful number, since it uses less digits than its factorization.

43140038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21570021.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 43140038 is about 6568.1076422361. The cubic root of 43140038 is about 350.7197108688.

The spelling of 43140038 in words is "forty-three million, one hundred forty thousand, thirty-eight".