1342263221 has 4 divisors (see below), whose sum is σ = 1445514252. Its totient is φ = 1239012192.

The previous prime is 1342263217. The next prime is 1342263257. The reversal of 1342263221 is 1223622431.

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

It can be written as a sum of positive squares in 2 ways, for example, as 640596100 + 701667121 = 25310^2 + 26489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1342263221 - 2² = 1342263217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342263211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51625496 + ... + 51625521.

It is an arithmetic number, because the mean of its divisors is an integer number (361378563).

Almost surely, 2^1342263221 is an apocalyptic number.

It is an amenable number.

1342263221 is a deficient number, since it is larger than the sum of its proper divisors (103251031).

1342263221 is a wasteful number, since it uses less digits than its factorization.

1342263221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103251030.

The product of its digits is 3456, while the sum is 26.

The square root of 1342263221 is about 36636.9106366790. The cubic root of 1342263221 is about 1103.0941043770.

Adding to 1342263221 its reverse (1223622431), we get a palindrome (2565885652).

The spelling of 1342263221 in words is "one billion, three hundred forty-two million, two hundred sixty-three thousand, two hundred twenty-one".