43139509142 has 8 divisors (see below), whose sum is σ = 64809902136. Its totient is φ = 21536208432.

The previous prime is 43139509141. The next prime is 43139509219. The reversal of 43139509142 is 24190593134.

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

It is a super-2 number, since 2×43139509142² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43139509142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43139509141) 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, 16771463 + ... + 16774034.

It is an arithmetic number, because the mean of its divisors is an integer number (8101237767).

Almost surely, 2^43139509142 is an apocalyptic number.

43139509142 is a deficient number, since it is larger than the sum of its proper divisors (21670392994).

43139509142 is a wasteful number, since it uses less digits than its factorization.

43139509142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33546142.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 43139509142 in words is "forty-three billion, one hundred thirty-nine million, five hundred nine thousand, one hundred forty-two".