1142504221 has 2 divisors, whose sum is σ = 1142504222. Its totient is φ = 1142504220.

The previous prime is 1142504189. The next prime is 1142504243. The reversal of 1142504221 is 1224052411.

It is an a-pointer prime, because the next prime (1142504243) can be obtained adding 1142504221 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1123188196 + 19316025 = 33514^2 + 4395^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142504221 - 2⁵ = 1142504189 is a prime.

It is a super-3 number, since 3×1142504221³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1142504192 and 1142504201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142504821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571252110 + 571252111.

It is an arithmetic number, because the mean of its divisors is an integer number (571252111).

Almost surely, 2^1142504221 is an apocalyptic number.

It is an amenable number.

1142504221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142504221 is an equidigital number, since it uses as much as digits as its factorization.

1142504221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1142504221 is about 33800.9500014423. The cubic root of 1142504221 is about 1045.4082853223.

Adding to 1142504221 its reverse (1224052411), we get a palindrome (2366556632).

The spelling of 1142504221 in words is "one billion, one hundred forty-two million, five hundred four thousand, two hundred twenty-one".