2042621887 has 2 divisors, whose sum is σ = 2042621888. Its totient is φ = 2042621886.

The previous prime is 2042621851. The next prime is 2042621891. The reversal of 2042621887 is 7881262402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2042621887 - 2⁷ = 2042621759 is a prime.

It is a super-3 number, since 3×2042621887³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2042621897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021310943 + 1021310944.

It is an arithmetic number, because the mean of its divisors is an integer number (1021310944).

Almost surely, 2^2042621887 is an apocalyptic number.

2042621887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042621887 is an equidigital number, since it uses as much as digits as its factorization.

2042621887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 2042621887 is about 45195.3746195338. The cubic root of 2042621887 is about 1268.8082496265.

The spelling of 2042621887 in words is "two billion, forty-two million, six hundred twenty-one thousand, eight hundred eighty-seven".