129250140531 has 8 divisors (see below), whose sum is σ = 182470786704. Its totient is φ = 81098127360.

The previous prime is 129250140529. The next prime is 129250140557. The reversal of 129250140531 is 135041052921.

It is a happy number.

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

It is not a de Polignac number, because 129250140531 - 2¹ = 129250140529 is a prime.

It is a super-2 number, since 2×129250140531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129250140492 and 129250140501.

It is not an unprimeable number, because it can be changed into a prime (129250140731) 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, 1267158190 + ... + 1267158291.

It is an arithmetic number, because the mean of its divisors is an integer number (22808848338).

Almost surely, 2^129250140531 is an apocalyptic number.

129250140531 is a deficient number, since it is larger than the sum of its proper divisors (53220646173).

129250140531 is a wasteful number, since it uses less digits than its factorization.

129250140531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534316501.

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 129250140531 in words is "one hundred twenty-nine billion, two hundred fifty million, one hundred forty thousand, five hundred thirty-one".