126128464271 has 4 divisors (see below), whose sum is σ = 126137850432. Its totient is φ = 126119078112.

The previous prime is 126128464243. The next prime is 126128464283. The reversal of 126128464271 is 172464821621.

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 126128464271 - 2²² = 126124269967 is a prime.

It is a super-2 number, since 2×126128464271² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126128464211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4672895 + ... + 4699808.

It is an arithmetic number, because the mean of its divisors is an integer number (31534462608).

Almost surely, 2^126128464271 is an apocalyptic number.

126128464271 is a deficient number, since it is larger than the sum of its proper divisors (9386161).

126128464271 is an equidigital number, since it uses as much as digits as its factorization.

126128464271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9386160.

The product of its digits is 258048, while the sum is 44.

The spelling of 126128464271 in words is "one hundred twenty-six billion, one hundred twenty-eight million, four hundred sixty-four thousand, two hundred seventy-one".