122143253 has 4 divisors (see below), whose sum is σ = 125444460. Its totient is φ = 118842048.

The previous prime is 122143213. The next prime is 122143261. The reversal of 122143253 is 352341221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352341221 = 9161 ⋅38461.

It can be written as a sum of positive squares in 2 ways, for example, as 105308644 + 16834609 = 10262^2 + 4103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122143253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122143213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1650548 + ... + 1650621.

It is an arithmetic number, because the mean of its divisors is an integer number (31361115).

Almost surely, 2^122143253 is an apocalyptic number.

It is an amenable number.

122143253 is a deficient number, since it is larger than the sum of its proper divisors (3301207).

122143253 is an equidigital number, since it uses as much as digits as its factorization.

122143253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301206.

The product of its digits is 1440, while the sum is 23.

The square root of 122143253 is about 11051.8438733091. The cubic root of 122143253 is about 496.1616129724.

Adding to 122143253 its reverse (352341221), we get a palindrome (474484474).

The spelling of 122143253 in words is "one hundred twenty-two million, one hundred forty-three thousand, two hundred fifty-three".