122143243 has 4 divisors (see below), whose sum is σ = 123689440. Its totient is φ = 120597048.

The previous prime is 122143213. The next prime is 122143261. The reversal of 122143243 is 342341221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342341221 = 19 ⋅18017959.

It is a cyclic number.

It is not a de Polignac number, because 122143243 - 2¹³ = 122135051 is a prime.

It is a Duffinian 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, 772980 + ... + 773137.

It is an arithmetic number, because the mean of its divisors is an integer number (30922360).

Almost surely, 2^122143243 is an apocalyptic number.

122143243 is a deficient number, since it is larger than the sum of its proper divisors (1546197).

122143243 is an equidigital number, since it uses as much as digits as its factorization.

122143243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546196.

The product of its digits is 1152, while the sum is 22.

The square root of 122143243 is about 11051.8434208959. The cubic root of 122143243 is about 496.1615994320.

Adding to 122143243 its reverse (342341221), we get a palindrome (464484464).

The spelling of 122143243 in words is "one hundred twenty-two million, one hundred forty-three thousand, two hundred forty-three".