129942467 has 4 divisors (see below), whose sum is σ = 130270176. Its totient is φ = 129614760.

The previous prime is 129942443. The next prime is 129942473. The reversal of 129942467 is 764249921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 764249921 = 73 ⋅10469177.

It is a cyclic number.

It is not a de Polignac number, because 129942467 - 2¹⁰ = 129941443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129942427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163259 + ... + 164052.

It is an arithmetic number, because the mean of its divisors is an integer number (32567544).

Almost surely, 2^129942467 is an apocalyptic number.

129942467 is a deficient number, since it is larger than the sum of its proper divisors (327709).

129942467 is an equidigital number, since it uses as much as digits as its factorization.

129942467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327708.

The product of its digits is 217728, while the sum is 44.

The square root of 129942467 is about 11399.2309828339. The cubic root of 129942467 is about 506.5049599856.

The spelling of 129942467 in words is "one hundred twenty-nine million, nine hundred forty-two thousand, four hundred sixty-seven".