1342244521 has 2 divisors, whose sum is σ = 1342244522. Its totient is φ = 1342244520.

The previous prime is 1342244509. The next prime is 1342244609. The reversal of 1342244521 is 1254422431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1325760921 + 16483600 = 36411^2 + 4060^2 .

It is an emirp because it is prime and its reverse (1254422431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1342244521 - 2⁵ = 1342244489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1342244521.

It is not a weakly prime, because it can be changed into another prime (1342242521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671122260 + 671122261.

It is an arithmetic number, because the mean of its divisors is an integer number (671122261).

Almost surely, 2^1342244521 is an apocalyptic number.

It is an amenable number.

1342244521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342244521 is an equidigital number, since it uses as much as digits as its factorization.

1342244521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 28.

The square root of 1342244521 is about 36636.6554286824. The cubic root of 1342244521 is about 1103.0889816968.

Adding to 1342244521 its reverse (1254422431), we get a palindrome (2596666952).

The spelling of 1342244521 in words is "one billion, three hundred forty-two million, two hundred forty-four thousand, five hundred twenty-one".