2142444521 has 8 divisors (see below), whose sum is σ = 2490008640. Its totient is φ = 1805255568.

The previous prime is 2142444511. The next prime is 2142444523. The reversal of 2142444521 is 1254442412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2142444521 - 2³⁰ = 1068702697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2142444523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2593346 + ... + 2594171.

It is an arithmetic number, because the mean of its divisors is an integer number (311251080).

Almost surely, 2^2142444521 is an apocalyptic number.

It is an amenable number.

2142444521 is a deficient number, since it is larger than the sum of its proper divisors (347564119).

2142444521 is an equidigital number, since it uses as much as digits as its factorization.

2142444521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5187583.

The product of its digits is 10240, while the sum is 29.

The square root of 2142444521 is about 46286.5479486211. The cubic root of 2142444521 is about 1289.1492339199.

Adding to 2142444521 its reverse (1254442412), we get a palindrome (3396886933).

The spelling of 2142444521 in words is "two billion, one hundred forty-two million, four hundred forty-four thousand, five hundred twenty-one".