2021042279 has 2 divisors, whose sum is σ = 2021042280. Its totient is φ = 2021042278.

The previous prime is 2021042273. The next prime is 2021042291. The reversal of 2021042279 is 9722401202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021042279 is a prime.

It is a super-2 number, since 2×2021042279² = 8169223787011027682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021042273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010521139 + 1010521140.

It is an arithmetic number, because the mean of its divisors is an integer number (1010521140).

Almost surely, 2^2021042279 is an apocalyptic number.

2021042279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021042279 is an equidigital number, since it uses as much as digits as its factorization.

2021042279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 2021042279 is about 44956.0038148410. The cubic root of 2021042279 is about 1264.3242453078.

The spelling of 2021042279 in words is "two billion, twenty-one million, forty-two thousand, two hundred seventy-nine".