747122 has 4 divisors (see below), whose sum is σ = 1120686. Its totient is φ = 373560.

The previous prime is 747113. The next prime is 747139. The reversal of 747122 is 221747.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 657721 + 89401 = 811^2 + 299^2 .

It is an unprimeable number.

747122 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186779 + ... + 186782.

2⁷⁴⁷¹²² is an apocalyptic number.

747122 is a deficient number, since it is larger than the sum of its proper divisors (373564).

747122 is a wasteful number, since it uses less digits than its factorization.

747122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373563.

The product of its digits is 784, while the sum is 23.

The square root of 747122 is about 864.3621926022. The cubic root of 747122 is about 90.7396657150.

Adding to 747122 its reverse (221747), we get a palindrome (968869).

The spelling of 747122 in words is "seven hundred forty-seven thousand, one hundred twenty-two", and thus it is an iban number.