1342565261 has 2 divisors, whose sum is σ = 1342565262. Its totient is φ = 1342565260.

The previous prime is 1342565219. The next prime is 1342565291. The reversal of 1342565261 is 1625652431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1293481225 + 49084036 = 35965^2 + 7006^2 .

It is a cyclic number.

It is not a de Polignac number, because 1342565261 - 2⁶ = 1342565197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1342565291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671282630 + 671282631.

It is an arithmetic number, because the mean of its divisors is an integer number (671282631).

Almost surely, 2^1342565261 is an apocalyptic number.

It is an amenable number.

1342565261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342565261 is an equidigital number, since it uses as much as digits as its factorization.

1342565261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 1342565261 is about 36641.0324772652. The cubic root of 1342565261 is about 1103.1768386599.

The spelling of 1342565261 in words is "one billion, three hundred forty-two million, five hundred sixty-five thousand, two hundred sixty-one".