129748718 has 8 divisors (see below), whose sum is σ = 212316120. Its totient is φ = 58976680.

The previous prime is 129748699. The next prime is 129748721. The reversal of 129748718 is 817847921.

It is a happy number.

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

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2948813 + ... + 2948856.

It is an arithmetic number, because the mean of its divisors is an integer number (26539515).

Almost surely, 2^129748718 is an apocalyptic number.

129748718 is a deficient number, since it is larger than the sum of its proper divisors (82567402).

129748718 is a wasteful number, since it uses less digits than its factorization.

129748718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5897682.

The product of its digits is 225792, while the sum is 47.

The square root of 129748718 is about 11390.7294762012. The cubic root of 129748718 is about 506.2530955864.

It can be divided in two parts, 129 and 748718, that added together give a palindrome (748847).

The spelling of 129748718 in words is "one hundred twenty-nine million, seven hundred forty-eight thousand, seven hundred eighteen".