122052649 has 4 divisors (see below), whose sum is σ = 122585860. Its totient is φ = 121519440.

The previous prime is 122052589. The next prime is 122052661. The reversal of 122052649 is 946250221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 119508624 + 2544025 = 10932^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 122052649 - 2¹¹ = 122050601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122052649.

It is not an unprimeable number, because it can be changed into a prime (122052149) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 266262 + ... + 266719.

It is an arithmetic number, because the mean of its divisors is an integer number (30646465).

Almost surely, 2^122052649 is an apocalyptic number.

It is an amenable number.

122052649 is a deficient number, since it is larger than the sum of its proper divisors (533211).

122052649 is an equidigital number, since it uses as much as digits as its factorization.

122052649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533210.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 122052649 is about 11047.7440683607. The cubic root of 122052649 is about 496.0389009227.

The spelling of 122052649 in words is "one hundred twenty-two million, fifty-two thousand, six hundred forty-nine".