122447845 has 16 divisors (see below), whose sum is σ = 158523120. Its totient is φ = 90261504.

The previous prime is 122447839. The next prime is 122447869. The reversal of 122447845 is 548744221.

It can be written as a sum of positive squares in 8 ways, for example, as 18122049 + 104325796 = 4257^2 + 10214^2 .

It is a cyclic number.

It is not a de Polignac number, because 122447845 - 2¹¹ = 122445797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44757 + ... + 47413.

It is an arithmetic number, because the mean of its divisors is an integer number (9907695).

Almost surely, 2^122447845 is an apocalyptic number.

It is an amenable number.

122447845 is a deficient number, since it is larger than the sum of its proper divisors (36075275).

122447845 is a wasteful number, since it uses less digits than its factorization.

122447845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384.

The product of its digits is 71680, while the sum is 37.

The square root of 122447845 is about 11065.6154370193. The cubic root of 122447845 is about 496.5737012513.

The spelling of 122447845 in words is "one hundred twenty-two million, four hundred forty-seven thousand, eight hundred forty-five".