129974241 has 4 divisors (see below), whose sum is σ = 173298992. Its totient is φ = 86649492.

The previous prime is 129974203. The next prime is 129974249. The reversal of 129974241 is 142479921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 129974241 - 2⁹ = 129973729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 129974241.

It is not an unprimeable number, because it can be changed into a prime (129974249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21662371 + ... + 21662376.

It is an arithmetic number, because the mean of its divisors is an integer number (43324748).

Almost surely, 2^129974241 is an apocalyptic number.

It is an amenable number.

129974241 is a deficient number, since it is larger than the sum of its proper divisors (43324751).

129974241 is an equidigital number, since it uses as much as digits as its factorization.

129974241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43324750.

The product of its digits is 36288, while the sum is 39.

The square root of 129974241 is about 11400.6245881531. The cubic root of 129974241 is about 506.5462407601.

The spelling of 129974241 in words is "one hundred twenty-nine million, nine hundred seventy-four thousand, two hundred forty-one".