1440420341 has 2 divisors, whose sum is σ = 1440420342. Its totient is φ = 1440420340.

The previous prime is 1440420271. The next prime is 1440420403. The reversal of 1440420341 is 1430240441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1092038116 + 348382225 = 33046^2 + 18665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440420341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440420941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720210170 + 720210171.

It is an arithmetic number, because the mean of its divisors is an integer number (720210171).

Almost surely, 2^1440420341 is an apocalyptic number.

It is an amenable number.

1440420341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440420341 is an equidigital number, since it uses as much as digits as its factorization.

1440420341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1440420341 is about 37952.8699968790. The cubic root of 1440420341 is about 1129.3531006416.

Adding to 1440420341 its reverse (1430240441), we get a palindrome (2870660782).

The spelling of 1440420341 in words is "one billion, four hundred forty million, four hundred twenty thousand, three hundred forty-one".