1340430236 has 12 divisors (see below), whose sum is σ = 2346026928. Its totient is φ = 670136832.

The previous prime is 1340430211. The next prime is 1340430269. The reversal of 1340430236 is 6320340431.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37340 + ... + 63836.

It is an arithmetic number, because the mean of its divisors is an integer number (195502244).

Almost surely, 2^1340430236 is an apocalyptic number.

It is an amenable number.

1340430236 is a deficient number, since it is larger than the sum of its proper divisors (1005596692).

1340430236 is a wasteful number, since it uses less digits than its factorization.

1340430236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39148 (or 39146 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 1340430236 is about 36611.8865397565. The cubic root of 1340430236 is about 1102.5917498454.

Adding to 1340430236 its reverse (6320340431), we get a palindrome (7660770667).

The spelling of 1340430236 in words is "one billion, three hundred forty million, four hundred thirty thousand, two hundred thirty-six".