122245789 has 8 divisors (see below), whose sum is σ = 124015320. Its totient is φ = 120488256.

The previous prime is 122245763. The next prime is 122245813. The reversal of 122245789 is 987542221.

It can be written as a sum of positive squares in 4 ways, for example, as 39162564 + 83083225 = 6258^2 + 9115^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122245789 - 2¹¹ = 122243741 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122245729) 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, 18627 + ... + 24319.

It is an arithmetic number, because the mean of its divisors is an integer number (15501915).

Almost surely, 2^122245789 is an apocalyptic number.

It is an amenable number.

122245789 is a deficient number, since it is larger than the sum of its proper divisors (1769531).

122245789 is a wasteful number, since it uses less digits than its factorization.

122245789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5999.

The product of its digits is 80640, while the sum is 40.

The square root of 122245789 is about 11056.4817641056. The cubic root of 122245789 is about 496.3004122829.

The spelling of 122245789 in words is "one hundred twenty-two million, two hundred forty-five thousand, seven hundred eighty-nine".