129140534 has 8 divisors (see below), whose sum is σ = 205105608. Its totient is φ = 60772000.

The previous prime is 129140533. The next prime is 129140563. The reversal of 129140534 is 435041921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 129140497 and 129140506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129140533) 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, 1899092 + ... + 1899159.

It is an arithmetic number, because the mean of its divisors is an integer number (25638201).

Almost surely, 2^129140534 is an apocalyptic number.

129140534 is a deficient number, since it is larger than the sum of its proper divisors (75965074).

129140534 is a wasteful number, since it uses less digits than its factorization.

129140534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798270.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 129140534 is about 11364.0016719464. The cubic root of 129140534 is about 505.4608530380.

The spelling of 129140534 in words is "one hundred twenty-nine million, one hundred forty thousand, five hundred thirty-four".