129349248 has 64 divisors (see below), whose sum is σ = 392675520. Its totient is φ = 36956160.

The previous prime is 129349247. The next prime is 129349249. The reversal of 129349248 is 842943921.

It is an interprime number because it is at equal distance from previous prime (129349247) and next prime (129349249).

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (129349247) 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, 21373 + ... + 26748.

It is an arithmetic number, because the mean of its divisors is an integer number (6135555).

Almost surely, 2^129349248 is an apocalyptic number.

It is an amenable number.

129349248 is an abundant number, since it is smaller than the sum of its proper divisors (263326272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129349248 is an equidigital number, since it uses as much as digits as its factorization.

129349248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48145 (or 48133 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 129349248 is about 11373.1810853428. The cubic root of 129349248 is about 505.7330112581.

The spelling of 129349248 in words is "one hundred twenty-nine million, three hundred forty-nine thousand, two hundred forty-eight".