122752381 has 2 divisors, whose sum is σ = 122752382. Its totient is φ = 122752380.

The previous prime is 122752379. The next prime is 122752459. The reversal of 122752381 is 183257221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93915481 + 28836900 = 9691^2 + 5370^2 .

It is a cyclic number.

It is not a de Polignac number, because 122752381 - 2¹ = 122752379 is a prime.

It is a super-2 number, since 2×122752381² = 30136294082338322, which contains 22 as substring.

Together with 122752379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122752361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61376190 + 61376191.

It is an arithmetic number, because the mean of its divisors is an integer number (61376191).

Almost surely, 2^122752381 is an apocalyptic number.

It is an amenable number.

122752381 is a deficient number, since it is larger than the sum of its proper divisors (1).

122752381 is an equidigital number, since it uses as much as digits as its factorization.

122752381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 122752381 is about 11079.3673555849. The cubic root of 122752381 is about 496.9850311337.

The spelling of 122752381 in words is "one hundred twenty-two million, seven hundred fifty-two thousand, three hundred eighty-one".