1442452221 has 12 divisors (see below), whose sum is σ = 2381191072. Its totient is φ = 824258376.

The previous prime is 1442452217. The next prime is 1442452229. The reversal of 1442452221 is 1222542441.

It is a happy number.

1442452221 is a `hidden beast` number, since 14 + 424 + 5 + 2 + 221 = 666.

It is not a de Polignac number, because 1442452221 - 2² = 1442452217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442452229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11447971 + ... + 11448096.

Almost surely, 2^1442452221 is an apocalyptic number.

It is an amenable number.

1442452221 is a deficient number, since it is larger than the sum of its proper divisors (938738851).

1442452221 is a wasteful number, since it uses less digits than its factorization.

1442452221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22896080 (or 22896077 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 1442452221 is about 37979.6290266243. The cubic root of 1442452221 is about 1129.8838790014.

Adding to 1442452221 its reverse (1222542441), we get a palindrome (2664994662).

The spelling of 1442452221 in words is "one billion, four hundred forty-two million, four hundred fifty-two thousand, two hundred twenty-one".