1340422049 has 2 divisors, whose sum is σ = 1340422050. Its totient is φ = 1340422048.

The previous prime is 1340422007. The next prime is 1340422067. The reversal of 1340422049 is 9402240431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1306316449 + 34105600 = 36143^2 + 5840^2 .

It is an emirp because it is prime and its reverse (9402240431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340422049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340425049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670211024 + 670211025.

It is an arithmetic number, because the mean of its divisors is an integer number (670211025).

Almost surely, 2^1340422049 is an apocalyptic number.

It is an amenable number.

1340422049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340422049 is an equidigital number, since it uses as much as digits as its factorization.

1340422049 is an evil number, because the sum of its binary digits is even.

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

The square root of 1340422049 is about 36611.7747316352. The cubic root of 1340422049 is about 1102.5895050594.

It can be divided in two parts, 13404 and 22049, that added together give a palindrome (35453).

The spelling of 1340422049 in words is "one billion, three hundred forty million, four hundred twenty-two thousand, forty-nine".