122540479 has 2 divisors, whose sum is σ = 122540480. Its totient is φ = 122540478.

The previous prime is 122540461. The next prime is 122540543. The reversal of 122540479 is 974045221.

It is a weak prime.

It is an emirp because it is prime and its reverse (974045221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122540479 - 2⁷ = 122540351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122543479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61270239 + 61270240.

It is an arithmetic number, because the mean of its divisors is an integer number (61270240).

Almost surely, 2^122540479 is an apocalyptic number.

122540479 is a deficient number, since it is larger than the sum of its proper divisors (1).

122540479 is an equidigital number, since it uses as much as digits as its factorization.

122540479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 122540479 is about 11069.8003143688. The cubic root of 122540479 is about 496.6988920029.

The spelling of 122540479 in words is "one hundred twenty-two million, five hundred forty thousand, four hundred seventy-nine".