1340422344 has 40 divisors (see below), whose sum is σ = 3754425510. Its totient is φ = 446807232.

The previous prime is 1340422337. The next prime is 1340422351. The reversal of 1340422344 is 4432240431.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1340422337) and next prime (1340422351).

It can be written as a sum of positive squares in only one way, i.e., 1328602500 + 11819844 = 36450^2 + 3438^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1033629 + ... + 1034924.

Almost surely, 2^1340422344 is an apocalyptic number.

It is an amenable number.

1340422344 is an abundant number, since it is smaller than the sum of its proper divisors (2414003166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340422344 is a wasteful number, since it uses less digits than its factorization.

1340422344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068571 (or 2068558 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 1340422344 is about 36611.7787603935. The cubic root of 1340422344 is about 1102.5895859454.

Adding to 1340422344 its reverse (4432240431), we get a palindrome (5772662775).

The spelling of 1340422344 in words is "one billion, three hundred forty million, four hundred twenty-two thousand, three hundred forty-four".