43139146 has 8 divisors (see below), whose sum is σ = 64744704. Its totient is φ = 21557580.

The previous prime is 43139143. The next prime is 43139189. The reversal of 43139146 is 64193134.

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

It is not an unprimeable number, because it can be changed into a prime (43139143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490 + ... + 9301.

It is an arithmetic number, because the mean of its divisors is an integer number (8093088).

Almost surely, 2^43139146 is an apocalyptic number.

43139146 is a deficient number, since it is larger than the sum of its proper divisors (21605558).

43139146 is a wasteful number, since it uses less digits than its factorization.

43139146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11996.

The product of its digits is 7776, while the sum is 31.

The square root of 43139146 is about 6568.0397380040. The cubic root of 43139146 is about 350.7172935928.

The spelling of 43139146 in words is "forty-three million, one hundred thirty-nine thousand, one hundred forty-six".