2142243651 has 8 divisors (see below), whose sum is σ = 2859563200. Its totient is φ = 1426543272.

The previous prime is 2142243647. The next prime is 2142243721. The reversal of 2142243651 is 1563422412.

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

It is not a de Polignac number, because 2142243651 - 2² = 2142243647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142243641) 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, 401701 + ... + 406998.

It is an arithmetic number, because the mean of its divisors is an integer number (357445400).

Almost surely, 2^2142243651 is an apocalyptic number.

2142243651 is a deficient number, since it is larger than the sum of its proper divisors (717319549).

2142243651 is an equidigital number, since it uses as much as digits as its factorization.

2142243651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809585.

The product of its digits is 11520, while the sum is 30.

The square root of 2142243651 is about 46284.3780448652. The cubic root of 2142243651 is about 1289.1089435729.

The spelling of 2142243651 in words is "two billion, one hundred forty-two million, two hundred forty-three thousand, six hundred fifty-one".