1111420279 has 2 divisors, whose sum is σ = 1111420280. Its totient is φ = 1111420278.

The previous prime is 1111420241. The next prime is 1111420357. The reversal of 1111420279 is 9720241111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111420279 - 2⁷ = 1111420151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111430279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555710139 + 555710140.

It is an arithmetic number, because the mean of its divisors is an integer number (555710140).

Almost surely, 2^1111420279 is an apocalyptic number.

1111420279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111420279 is an equidigital number, since it uses as much as digits as its factorization.

1111420279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1111420279 is about 33337.9705291129. The cubic root of 1111420279 is about 1035.8402253940.

The spelling of 1111420279 in words is "one billion, one hundred eleven million, four hundred twenty thousand, two hundred seventy-nine".