1342123217 has 2 divisors, whose sum is σ = 1342123218. Its totient is φ = 1342123216.

The previous prime is 1342123201. The next prime is 1342123229. The reversal of 1342123217 is 7123212431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1022464576 + 319658641 = 31976^2 + 17879^2 .

It is an emirp because it is prime and its reverse (7123212431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1342123217 - 2⁴ = 1342123201 is a prime.

It is a super-2 number, since 2×1342123217² = 3602589459220858178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1342123247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671061608 + 671061609.

It is an arithmetic number, because the mean of its divisors is an integer number (671061609).

Almost surely, 2^1342123217 is an apocalyptic number.

It is an amenable number.

1342123217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342123217 is an equidigital number, since it uses as much as digits as its factorization.

1342123217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 1342123217 is about 36634.9998908148. Note that the first 3 decimals coincide. The cubic root of 1342123217 is about 1103.0557505096.

Adding to 1342123217 its reverse (7123212431), we get a palindrome (8465335648).

The spelling of 1342123217 in words is "one billion, three hundred forty-two million, one hundred twenty-three thousand, two hundred seventeen".