122143279 has 2 divisors, whose sum is σ = 122143280. Its totient is φ = 122143278.

The previous prime is 122143261. The next prime is 122143313. The reversal of 122143279 is 972341221.

It is a weak prime.

It is an emirp because it is prime and its reverse (972341221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122143279 - 2¹³ = 122135087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122143279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122143979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61071639 + 61071640.

It is an arithmetic number, because the mean of its divisors is an integer number (61071640).

Almost surely, 2^122143279 is an apocalyptic number.

122143279 is a deficient number, since it is larger than the sum of its proper divisors (1).

122143279 is an equidigital number, since it uses as much as digits as its factorization.

122143279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 122143279 is about 11051.8450495833. The cubic root of 122143279 is about 496.1616481775.

The spelling of 122143279 in words is "one hundred twenty-two million, one hundred forty-three thousand, two hundred seventy-nine".