102424139 has 8 divisors (see below), whose sum is σ = 105568320. Its totient is φ = 99320256.

The previous prime is 102424111. The next prime is 102424159. The reversal of 102424139 is 931424201.

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

It is a cyclic number.

It is not a de Polignac number, because 102424139 - 2⁸ = 102423883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102424159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4874 + ... + 15119.

It is an arithmetic number, because the mean of its divisors is an integer number (13196040).

Almost surely, 2^102424139 is an apocalyptic number.

102424139 is a deficient number, since it is larger than the sum of its proper divisors (3144181).

102424139 is a wasteful number, since it uses less digits than its factorization.

102424139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20149.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 102424139 is about 10120.4811644506. The cubic root of 102424139 is about 467.8795971342.

The spelling of 102424139 in words is "one hundred two million, four hundred twenty-four thousand, one hundred thirty-nine".