720000122 has 4 divisors (see below), whose sum is σ = 1080000186. Its totient is φ = 360000060.

The previous prime is 720000107. The next prime is 720000161. The reversal of 720000122 is 221000027.

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., 486246601 + 233753521 = 22051^2 + 15289^2 .

It is a junction number, because it is equal to n+sod(n) for n = 720000097 and 720000106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180000029 + ... + 180000032.

Almost surely, 2^720000122 is an apocalyptic number.

720000122 is a deficient number, since it is larger than the sum of its proper divisors (360000064).

720000122 is a wasteful number, since it uses less digits than its factorization.

720000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360000063.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 720000122 is about 26832.8180033332. The cubic root of 720000122 is about 896.2809999347.

Adding to 720000122 its reverse (221000027), we get a palindrome (941000149).

The spelling of 720000122 in words is "seven hundred twenty million, one hundred twenty-two", and thus it is an aban number.