129523840149 has 8 divisors (see below), whose sum is σ = 188398312992. Its totient is φ = 78499297040.

The previous prime is 129523840093. The next prime is 129523840151. The reversal of 129523840149 is 941048325921.

It is a happy number.

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 129523840149 - 2¹⁶ = 129523774613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129523840098 and 129523840107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129523840949) 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, 1962482394 + ... + 1962482459.

It is an arithmetic number, because the mean of its divisors is an integer number (23549789124).

Almost surely, 2^129523840149 is an apocalyptic number.

It is an amenable number.

129523840149 is a deficient number, since it is larger than the sum of its proper divisors (58874472843).

129523840149 is a wasteful number, since it uses less digits than its factorization.

129523840149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3924964867.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 129523840149 in words is "one hundred twenty-nine billion, five hundred twenty-three million, eight hundred forty thousand, one hundred forty-nine".