43138090 has 16 divisors (see below), whose sum is σ = 78262272. Its totient is φ = 17118864.

The previous prime is 43138079. The next prime is 43138099. The reversal of 43138090 is 9083134.

It is not an unprimeable number, because it can be changed into a prime (43138099) 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 7 ways as a sum of consecutive naturals, for example, 15714 + ... + 18253.

It is an arithmetic number, because the mean of its divisors is an integer number (4891392).

Almost surely, 2^43138090 is an apocalyptic number.

43138090 is a deficient number, since it is larger than the sum of its proper divisors (35124182).

43138090 is a wasteful number, since it uses less digits than its factorization.

43138090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34101.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 43138090 is about 6567.9593482299. The cubic root of 43138090 is about 350.7144318418.

It can be divided in two parts, 4313 and 8090, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 43138090 in words is "forty-three million, one hundred thirty-eight thousand, ninety".