220042387 has 2 divisors, whose sum is σ = 220042388. Its totient is φ = 220042386.

The previous prime is 220042349. The next prime is 220042393. The reversal of 220042387 is 783240022.

220042387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220042387 - 2¹¹ = 220040339 is a prime.

It is not a weakly prime, because it can be changed into another prime (220042187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110021193 + 110021194.

It is an arithmetic number, because the mean of its divisors is an integer number (110021194).

Almost surely, 2^220042387 is an apocalyptic number.

220042387 is a deficient number, since it is larger than the sum of its proper divisors (1).

220042387 is an equidigital number, since it uses as much as digits as its factorization.

220042387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 220042387 is about 14833.8257708522. The cubic root of 220042387 is about 603.7198412351.

The spelling of 220042387 in words is "two hundred twenty million, forty-two thousand, three hundred eighty-seven".