71212641 has 16 divisors (see below), whose sum is σ = 96036864. Its totient is φ = 46935504.

The previous prime is 71212637. The next prime is 71212649. The reversal of 71212641 is 14621217.

It is not a de Polignac number, because 71212641 - 2² = 71212637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71212649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153576 + ... + 154038.

It is an arithmetic number, because the mean of its divisors is an integer number (6002304).

Almost surely, 2^71212641 is an apocalyptic number.

It is an amenable number.

71212641 is a deficient number, since it is larger than the sum of its proper divisors (24824223).

71212641 is a wasteful number, since it uses less digits than its factorization.

71212641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940.

The product of its digits is 672, while the sum is 24.

The square root of 71212641 is about 8438.7582617350. The cubic root of 71212641 is about 414.4947468029.

Adding to 71212641 its reverse (14621217), we get a palindrome (85833858).

The spelling of 71212641 in words is "seventy-one million, two hundred twelve thousand, six hundred forty-one".