1240440322 has 16 divisors (see below), whose sum is σ = 2079320544. Its totient is φ = 550084000.

The previous prime is 1240440319. The next prime is 1240440323. The reversal of 1240440322 is 2230440421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1240440293 and 1240440302.

It is not an unprimeable number, because it can be changed into a prime (1240440323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686704 + ... + 688507.

It is an arithmetic number, because the mean of its divisors is an integer number (129957534).

Almost surely, 2^1240440322 is an apocalyptic number.

1240440322 is a deficient number, since it is larger than the sum of its proper divisors (838880222).

1240440322 is a wasteful number, since it uses less digits than its factorization.

1240440322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375265.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1240440322 is about 35219.8853206537. The cubic root of 1240440322 is about 1074.4642210603.

Adding to 1240440322 its reverse (2230440421), we get a palindrome (3470880743).

Subtracting 1240440322 from its reverse (2230440421), we obtain a palindrome (990000099).

The spelling of 1240440322 in words is "one billion, two hundred forty million, four hundred forty thousand, three hundred twenty-two".