2042732021 has 16 divisors (see below), whose sum is σ = 2254777728. Its totient is φ = 1835136000.

The previous prime is 2042732017. The next prime is 2042732089. The reversal of 2042732021 is 1202372402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2042732021 - 2² = 2042732017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042732221) 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 in 15 ways as a sum of consecutive naturals, for example, 1133321 + ... + 1135121.

It is an arithmetic number, because the mean of its divisors is an integer number (140923608).

Almost surely, 2^2042732021 is an apocalyptic number.

It is an amenable number.

2042732021 is a deficient number, since it is larger than the sum of its proper divisors (212045707).

2042732021 is a wasteful number, since it uses less digits than its factorization.

2042732021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 2042732021 is about 45196.5930242535. The cubic root of 2042732021 is about 1268.8310530664.

The spelling of 2042732021 in words is "two billion, forty-two million, seven hundred thirty-two thousand, twenty-one".