71400207121 has 8 divisors (see below), whose sum is σ = 72924983424. Its totient is φ = 69875665200.

The previous prime is 71400207083. The next prime is 71400207163. The reversal of 71400207121 is 12170200417.

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

It is a cyclic number.

It is not a de Polignac number, because 71400207121 - 2¹⁹ = 71399682833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71400207421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646851 + ... + 749143.

It is an arithmetic number, because the mean of its divisors is an integer number (9115622928).

Almost surely, 2^71400207121 is an apocalyptic number.

It is an amenable number.

71400207121 is a deficient number, since it is larger than the sum of its proper divisors (1524776303).

71400207121 is a wasteful number, since it uses less digits than its factorization.

71400207121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117191.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 71400207121 its reverse (12170200417), we get a palindrome (83570407538).

The spelling of 71400207121 in words is "seventy-one billion, four hundred million, two hundred seven thousand, one hundred twenty-one".