126403787271 has 8 divisors (see below), whose sum is σ = 177408824320. Its totient is φ = 79833970872.

The previous prime is 126403787267. The next prime is 126403787281. The reversal of 126403787271 is 172787304621.

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

It is not a de Polignac number, because 126403787271 - 2² = 126403787267 is a prime.

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 126403787271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126403787261) 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, 1108805095 + ... + 1108805208.

It is an arithmetic number, because the mean of its divisors is an integer number (22176103040).

Almost surely, 2^126403787271 is an apocalyptic number.

126403787271 is a deficient number, since it is larger than the sum of its proper divisors (51005037049).

126403787271 is a wasteful number, since it uses less digits than its factorization.

126403787271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217610325.

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 126403787271 in words is "one hundred twenty-six billion, four hundred three million, seven hundred eighty-seven thousand, two hundred seventy-one".