71206120 has 32 divisors (see below), whose sum is σ = 160461000. Its totient is φ = 28438528.

The previous prime is 71206099. The next prime is 71206123. The reversal of 71206120 is 2160217.

It can be written as a sum of positive squares in 4 ways, for example, as 70862724 + 343396 = 8418^2 + 586^2 .

It is not an unprimeable number, because it can be changed into a prime (71206123) 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, 41112 + ... + 42808.

Almost surely, 2^71206120 is an apocalyptic number.

It is an amenable number.

71206120 is an abundant number, since it is smaller than the sum of its proper divisors (89254880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71206120 is a wasteful number, since it uses less digits than its factorization.

71206120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757 (or 2753 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 71206120 is about 8438.3718808784. The cubic root of 71206120 is about 414.4820945420.

Adding to 71206120 its reverse (2160217), we get a palindrome (73366337).

The spelling of 71206120 in words is "seventy-one million, two hundred six thousand, one hundred twenty".