712120161 has 16 divisors (see below), whose sum is σ = 966063168. Its totient is φ = 466478400.

The previous prime is 712120099. The next prime is 712120271. The reversal of 712120161 is 161021217.

It is a happy number.

It is not a de Polignac number, because 712120161 - 2¹³ = 712111969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (712120861) 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, 286255 + ... + 288731.

It is an arithmetic number, because the mean of its divisors is an integer number (60378948).

Almost surely, 2^712120161 is an apocalyptic number.

It is an amenable number.

712120161 is a deficient number, since it is larger than the sum of its proper divisors (253943007).

712120161 is a wasteful number, since it uses less digits than its factorization.

712120161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 712120161 is about 26685.5796451941. The cubic root of 712120161 is about 892.9992492722. Note that the first 3 decimals are identical.

Adding to 712120161 its reverse (161021217), we get a palindrome (873141378).

The spelling of 712120161 in words is "seven hundred twelve million, one hundred twenty thousand, one hundred sixty-one".