140405303450 has 24 divisors (see below), whose sum is σ = 263549781660. Its totient is φ = 55646870400.

The previous prime is 140405303369. The next prime is 140405303459. The reversal of 140405303450 is 54303504041.

It can be written as a sum of positive squares in 6 ways, for example, as 21529986361 + 118875317089 = 146731^2 + 344783^2 .

It is not an unprimeable number, because it can be changed into a prime (140405303459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12875771 + ... + 12886670.

Almost surely, 2^140405303450 is an apocalyptic number.

140405303450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140405303450 is a deficient number, since it is larger than the sum of its proper divisors (123144478210).

140405303450 is a wasteful number, since it uses less digits than its factorization.

140405303450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25762562 (or 25762557 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 140405303450 its reverse (54303504041), we get a palindrome (194708807491).

The spelling of 140405303450 in words is "one hundred forty billion, four hundred five million, three hundred three thousand, four hundred fifty".