104142643 has 18 divisors (see below), whose sum is σ = 119737772. Its totient is φ = 90503160.

The previous prime is 104142641. The next prime is 104142707. The reversal of 104142643 is 346241401.

It is not a de Polignac number, because 104142643 - 2¹ = 104142641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (104142641) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 63196 + ... + 64822.

Almost surely, 2^104142643 is an apocalyptic number.

104142643 is a deficient number, since it is larger than the sum of its proper divisors (15595129).

104142643 is a wasteful number, since it uses less digits than its factorization.

104142643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695 (or 1661 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 104142643 is about 10205.0302792299. The cubic root of 104142643 is about 470.4818402420.

The spelling of 104142643 in words is "one hundred four million, one hundred forty-two thousand, six hundred forty-three".