220242479 has 2 divisors, whose sum is σ = 220242480. Its totient is φ = 220242478.

The previous prime is 220242403. The next prime is 220242481. The reversal of 220242479 is 974242022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220242479 - 2⁸ = 220242223 is a prime.

Together with 220242481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220241479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110121239 + 110121240.

It is an arithmetic number, because the mean of its divisors is an integer number (110121240).

Almost surely, 2^220242479 is an apocalyptic number.

220242479 is a deficient number, since it is larger than the sum of its proper divisors (1).

220242479 is an equidigital number, since it uses as much as digits as its factorization.

220242479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 220242479 is about 14840.5686885645. The cubic root of 220242479 is about 603.9027800996.

The spelling of 220242479 in words is "two hundred twenty million, two hundred forty-two thousand, four hundred seventy-nine".