2144451242 has 4 divisors (see below), whose sum is σ = 3216676866. Its totient is φ = 1072225620.

The previous prime is 2144451209. The next prime is 2144451251. The reversal of 2144451242 is 2421544412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1500865081 + 643586161 = 38741^2 + 25369^2 .

It is a super-2 number, since 2×2144451242² = 9197342258630685128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536112809 + ... + 536112812.

Almost surely, 2^2144451242 is an apocalyptic number.

2144451242 is a deficient number, since it is larger than the sum of its proper divisors (1072225624).

2144451242 is a wasteful number, since it uses less digits than its factorization.

2144451242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072225623.

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

The square root of 2144451242 is about 46308.2200262545. The cubic root of 2144451242 is about 1289.5516022647.

Adding to 2144451242 its reverse (2421544412), we get a palindrome (4565995654).

The spelling of 2144451242 in words is "two billion, one hundred forty-four million, four hundred fifty-one thousand, two hundred forty-two".