129754838 has 16 divisors (see below), whose sum is σ = 205927920. Its totient is φ = 61147296.

The previous prime is 129754837. The next prime is 129754847. The reversal of 129754838 is 838457921.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 129754792 and 129754801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129754831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1181 + ... + 16152.

It is an arithmetic number, because the mean of its divisors is an integer number (12870495).

Almost surely, 2^129754838 is an apocalyptic number.

129754838 is a deficient number, since it is larger than the sum of its proper divisors (76173082).

129754838 is a wasteful number, since it uses less digits than its factorization.

129754838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17551.

The product of its digits is 483840, while the sum is 47.

The square root of 129754838 is about 11390.9981125448. The cubic root of 129754838 is about 506.2610551262.

The spelling of 129754838 in words is "one hundred twenty-nine million, seven hundred fifty-four thousand, eight hundred thirty-eight".