1342626221 has 8 divisors (see below), whose sum is σ = 1456278264. Its totient is φ = 1232826880.

The previous prime is 1342626217. The next prime is 1342626223. The reversal of 1342626221 is 1226262431.

It can be written as a sum of positive squares in 4 ways, for example, as 116856100 + 1225770121 = 10810^2 + 35011^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1342626221 - 2² = 1342626217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342626223) 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, 962450 + ... + 963843.

It is an arithmetic number, because the mean of its divisors is an integer number (182034783).

Almost surely, 2^1342626221 is an apocalyptic number.

It is an amenable number.

1342626221 is a deficient number, since it is larger than the sum of its proper divisors (113652043).

1342626221 is a wasteful number, since it uses less digits than its factorization.

1342626221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926351.

The product of its digits is 6912, while the sum is 29.

The square root of 1342626221 is about 36641.8643221111. The cubic root of 1342626221 is about 1103.1935352145.

Adding to 1342626221 its reverse (1226262431), we get a palindrome (2568888652).

The spelling of 1342626221 in words is "one billion, three hundred forty-two million, six hundred twenty-six thousand, two hundred twenty-one".