129865242246 has 8 divisors (see below), whose sum is σ = 259730484504. Its totient is φ = 43288414080.

The previous prime is 129865242197. The next prime is 129865242251. The reversal of 129865242246 is 642242568921.

It is a happy number.

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

129865242246 is an admirable number.

It is a super-2 number, since 2×129865242246² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10822103515 + ... + 10822103526.

It is an arithmetic number, because the mean of its divisors is an integer number (32466310563).

Almost surely, 2^129865242246 is an apocalyptic number.

129865242246 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129865242246 is a wasteful number, since it uses less digits than its factorization.

129865242246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21644207046.

The product of its digits is 3317760, while the sum is 51.

The spelling of 129865242246 in words is "one hundred twenty-nine billion, eight hundred sixty-five million, two hundred forty-two thousand, two hundred forty-six".