129142514 has 4 divisors (see below), whose sum is σ = 193713774. Its totient is φ = 64571256.

The previous prime is 129142513. The next prime is 129142547. The reversal of 129142514 is 415241921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 415241921 = 157 ⋅2644853.

It can be written as a sum of positive squares in only one way, i.e., 108847489 + 20295025 = 10433^2 + 4505^2 .

It is not an unprimeable number, because it can be changed into a prime (129142513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32285627 + ... + 32285630.

Almost surely, 2^129142514 is an apocalyptic number.

129142514 is a deficient number, since it is larger than the sum of its proper divisors (64571260).

129142514 is an equidigital number, since it uses as much as digits as its factorization.

129142514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64571259.

The product of its digits is 2880, while the sum is 29.

The square root of 129142514 is about 11364.0887888119. The cubic root of 129142514 is about 505.4634362894.

The spelling of 129142514 in words is "one hundred twenty-nine million, one hundred forty-two thousand, five hundred fourteen".