129430137243 has 16 divisors (see below), whose sum is σ = 188272624896. Its totient is φ = 78438087840.

The previous prime is 129430137203. The next prime is 129430137247. The reversal of 129430137243 is 342731034921.

It is a de Polignac number, because none of the positive numbers 2^k-129430137243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129430137247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541521 + ... + 743037.

It is an arithmetic number, because the mean of its divisors is an integer number (11767039056).

Almost surely, 2^129430137243 is an apocalyptic number.

129430137243 is a deficient number, since it is larger than the sum of its proper divisors (58842487653).

129430137243 is a wasteful number, since it uses less digits than its factorization.

129430137243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220994.

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 129430137243 in words is "one hundred twenty-nine billion, four hundred thirty million, one hundred thirty-seven thousand, two hundred forty-three".