1340240522 has 4 divisors (see below), whose sum is σ = 2010360786. Its totient is φ = 670120260.

The previous prime is 1340240497. The next prime is 1340240557. The reversal of 1340240522 is 2250420431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1166290801 + 173949721 = 34151^2 + 13189^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335060129 + ... + 335060132.

Almost surely, 2^1340240522 is an apocalyptic number.

1340240522 is a deficient number, since it is larger than the sum of its proper divisors (670120264).

1340240522 is an equidigital number, since it uses as much as digits as its factorization.

1340240522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670120263.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1340240522 is about 36609.2955682023. The cubic root of 1340240522 is about 1102.5397299902.

Adding to 1340240522 its reverse (2250420431), we get a palindrome (3590660953).

The spelling of 1340240522 in words is "one billion, three hundred forty million, two hundred forty thousand, five hundred twenty-two".