1340422541 has 2 divisors, whose sum is σ = 1340422542. Its totient is φ = 1340422540.

The previous prime is 1340422493. The next prime is 1340422591. The reversal of 1340422541 is 1452240431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1132053316 + 208369225 = 33646^2 + 14435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340422541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340422541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340422591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670211270 + 670211271.

It is an arithmetic number, because the mean of its divisors is an integer number (670211271).

Almost surely, 2^1340422541 is an apocalyptic number.

It is an amenable number.

1340422541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340422541 is an equidigital number, since it uses as much as digits as its factorization.

1340422541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1340422541 is about 36611.7814507844. The cubic root of 1340422541 is about 1102.5896399607.

Adding to 1340422541 its reverse (1452240431), we get a palindrome (2792662972).

The spelling of 1340422541 in words is "one billion, three hundred forty million, four hundred twenty-two thousand, five hundred forty-one".