2142603021 has 16 divisors (see below), whose sum is σ = 3096162944. Its totient is φ = 1310122944.

The previous prime is 2142602981. The next prime is 2142603049. The reversal of 2142603021 is 1203062412.

It is not a de Polignac number, because 2142603021 - 2⁷ = 2142602893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142608021) 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, 168841 + ... + 181086.

It is an arithmetic number, because the mean of its divisors is an integer number (193510184).

Almost surely, 2^2142603021 is an apocalyptic number.

It is an amenable number.

2142603021 is a deficient number, since it is larger than the sum of its proper divisors (953559923).

2142603021 is a wasteful number, since it uses less digits than its factorization.

2142603021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350100.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2142603021 is about 46288.2600774754. The cubic root of 2142603021 is about 1289.1810239481.

Adding to 2142603021 its reverse (1203062412), we get a palindrome (3345665433).

The spelling of 2142603021 in words is "two billion, one hundred forty-two million, six hundred three thousand, twenty-one".