122784253 has 2 divisors, whose sum is σ = 122784254. Its totient is φ = 122784252.

The previous prime is 122784247. The next prime is 122784269. The reversal of 122784253 is 352487221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108930969 + 13853284 = 10437^2 + 3722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122784253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122784203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61392126 + 61392127.

It is an arithmetic number, because the mean of its divisors is an integer number (61392127).

Almost surely, 2^122784253 is an apocalyptic number.

It is an amenable number.

122784253 is a deficient number, since it is larger than the sum of its proper divisors (1).

122784253 is an equidigital number, since it uses as much as digits as its factorization.

122784253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 34.

The square root of 122784253 is about 11080.8056115068. The cubic root of 122784253 is about 497.0280405810.

The spelling of 122784253 in words is "one hundred twenty-two million, seven hundred eighty-four thousand, two hundred fifty-three".