1342145309 has 2 divisors, whose sum is σ = 1342145310. Its totient is φ = 1342145308.

The previous prime is 1342145303. The next prime is 1342145323. The reversal of 1342145309 is 9035412431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1310222809 + 31922500 = 36197^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 1342145309 - 2⁴ = 1342145293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1342145303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671072654 + 671072655.

It is an arithmetic number, because the mean of its divisors is an integer number (671072655).

Almost surely, 2^1342145309 is an apocalyptic number.

It is an amenable number.

1342145309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342145309 is an equidigital number, since it uses as much as digits as its factorization.

1342145309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1342145309 is about 36635.3014045197. The cubic root of 1342145309 is about 1103.0618027542.

The spelling of 1342145309 in words is "one billion, three hundred forty-two million, one hundred forty-five thousand, three hundred nine".