129254482228427 has 4 divisors (see below), whose sum is σ = 129390111276840. Its totient is φ = 129118853180016.

The previous prime is 129254482228393. The next prime is 129254482228429. The reversal of 129254482228427 is 724822284452921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129254482228427 - 2¹² = 129254482224331 is a prime.

It is a super-3 number, since 3×129254482228427³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129254482228427.

It is not an unprimeable number, because it can be changed into a prime (129254482228429) 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, 67814522777 + ... + 67814524682.

It is an arithmetic number, because the mean of its divisors is an integer number (32347527819210).

Almost surely, 2^{129254482228427} is an apocalyptic number.

129254482228427 is a deficient number, since it is larger than the sum of its proper divisors (135629048413).

129254482228427 is an equidigital number, since it uses as much as digits as its factorization.

129254482228427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135629048412.

The product of its digits is 82575360, while the sum is 62.

The spelling of 129254482228427 in words is "one hundred twenty-nine trillion, two hundred fifty-four billion, four hundred eighty-two million, two hundred twenty-eight thousand, four hundred twenty-seven".