2142132021 has 16 divisors (see below), whose sum is σ = 3193748800. Its totient is φ = 1418989104.

The previous prime is 2142132017. The next prime is 2142132037. The reversal of 2142132021 is 1202312412.

It is a happy number.

It is not a de Polignac number, because 2142132021 - 2² = 2142132017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2142131985 and 2142132003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142132521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248431 + ... + 256908.

It is an arithmetic number, because the mean of its divisors is an integer number (199609300).

Almost surely, 2^2142132021 is an apocalyptic number.

It is an amenable number.

2142132021 is a deficient number, since it is larger than the sum of its proper divisors (1051616779).

2142132021 is a wasteful number, since it uses less digits than its factorization.

2142132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505505 (or 505499 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2142132021 is about 46283.1721147114. The cubic root of 2142132021 is about 1289.0865518263.

Adding to 2142132021 its reverse (1202312412), we get a palindrome (3344444433).

The spelling of 2142132021 in words is "two billion, one hundred forty-two million, one hundred thirty-two thousand, twenty-one".