2021142159 has 16 divisors (see below), whose sum is σ = 2998760800. Its totient is φ = 1345413888.

The previous prime is 2021142133. The next prime is 2021142199. The reversal of 2021142159 is 9512411202.

2021142159 is a `hidden beast` number, since 20 + 211 + 421 + 5 + 9 = 666.

It is not a de Polignac number, because 2021142159 - 2⁷ = 2021142031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021142199) 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 in 15 ways as a sum of consecutive naturals, for example, 37444 + ... + 73785.

It is an arithmetic number, because the mean of its divisors is an integer number (187422550).

Almost surely, 2^2021142159 is an apocalyptic number.

2021142159 is a deficient number, since it is larger than the sum of its proper divisors (977618641).

2021142159 is a wasteful number, since it uses less digits than its factorization.

2021142159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111911 (or 111905 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2021142159 is about 44957.1146649782. The cubic root of 2021142159 is about 1264.3450726183.

The spelling of 2021142159 in words is "two billion, twenty-one million, one hundred forty-two thousand, one hundred fifty-nine".