140405603 has 8 divisors (see below), whose sum is σ = 156084096. Its totient is φ = 125424000.

The previous prime is 140405597. The next prime is 140405609. The reversal of 140405603 is 306504041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140405597) and next prime (140405609).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-140405603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140405609) 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, 173798 + ... + 174603.

It is an arithmetic number, because the mean of its divisors is an integer number (19510512).

Almost surely, 2^140405603 is an apocalyptic number.

140405603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

140405603 is a deficient number, since it is larger than the sum of its proper divisors (15678493).

140405603 is a wasteful number, since it uses less digits than its factorization.

140405603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348445.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 140405603 is about 11849.2870249648. The cubic root of 140405603 is about 519.7503769839.

Adding to 140405603 its reverse (306504041), we get a palindrome (446909644).

The spelling of 140405603 in words is "one hundred forty million, four hundred five thousand, six hundred three".