129819429 has 40 divisors (see below), whose sum is σ = 214315200. Its totient is φ = 77894784.

The previous prime is 129819427. The next prime is 129819461. The reversal of 129819429 is 924918921.

It is not a de Polignac number, because 129819429 - 2¹ = 129819427 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129819427) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29622 + ... + 33720.

It is an arithmetic number, because the mean of its divisors is an integer number (5357880).

Almost surely, 2^129819429 is an apocalyptic number.

It is an amenable number.

129819429 is a deficient number, since it is larger than the sum of its proper divisors (84495771).

129819429 is a wasteful number, since it uses less digits than its factorization.

129819429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151 (or 4142 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 129819429 is about 11393.8329371639. The cubic root of 129819429 is about 506.3450455291.

The spelling of 129819429 in words is "one hundred twenty-nine million, eight hundred nineteen thousand, four hundred twenty-nine".