122143013 has 4 divisors (see below), whose sum is σ = 122210508. Its totient is φ = 122075520.

The previous prime is 122143003. The next prime is 122143019. The reversal of 122143013 is 310341221.

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 31550689 + 90592324 = 5617^2 + 9518^2 .

It is a cyclic number.

It is not a de Polignac number, because 122143013 - 2²⁶ = 55034149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122142982 and 122143000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122143019) 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, 30956 + ... + 34677.

It is an arithmetic number, because the mean of its divisors is an integer number (30552627).

Almost surely, 2^122143013 is an apocalyptic number.

It is an amenable number.

122143013 is a deficient number, since it is larger than the sum of its proper divisors (67495).

122143013 is an equidigital number, since it uses as much as digits as its factorization.

122143013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67494.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 122143013 is about 11051.8330153871. The cubic root of 122143013 is about 496.1612880019.

Adding to 122143013 its reverse (310341221), we get a palindrome (432484234).

The spelling of 122143013 in words is "one hundred twenty-two million, one hundred forty-three thousand, thirteen".