712742522 has 4 divisors (see below), whose sum is σ = 1069113786. Its totient is φ = 356371260.

The previous prime is 712742521. The next prime is 712742539. The reversal of 712742522 is 225247217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225247217 = 13 ⋅17326709.

It can be written as a sum of positive squares in only one way, i.e., 711875761 + 866761 = 26681^2 + 931^2 .

It is not an unprimeable number, because it can be changed into a prime (712742521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178185629 + ... + 178185632.

Almost surely, 2^712742522 is an apocalyptic number.

712742522 is a deficient number, since it is larger than the sum of its proper divisors (356371264).

712742522 is a wasteful number, since it uses less digits than its factorization.

712742522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356371263.

The product of its digits is 15680, while the sum is 32.

The square root of 712742522 is about 26697.2380968519. The cubic root of 712742522 is about 893.2593205866.

Adding to 712742522 its reverse (225247217), we get a palindrome (937989739).

The spelling of 712742522 in words is "seven hundred twelve million, seven hundred forty-two thousand, five hundred twenty-two".