140405315 has 4 divisors (see below), whose sum is σ = 168486384. Its totient is φ = 112324248.

The previous prime is 140405311. The next prime is 140405333. The reversal of 140405315 is 513504041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140405315 - 2² = 140405311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140405311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14040527 + ... + 14040536.

It is an arithmetic number, because the mean of its divisors is an integer number (42121596).

Almost surely, 2^140405315 is an apocalyptic number.

140405315 is a deficient number, since it is larger than the sum of its proper divisors (28081069).

140405315 is an equidigital number, since it uses as much as digits as its factorization.

140405315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28081068.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 140405315 is about 11849.2748723287. The cubic root of 140405315 is about 519.7500216130.

Adding to 140405315 its reverse (513504041), we get a palindrome (653909356).

The spelling of 140405315 in words is "one hundred forty million, four hundred five thousand, three hundred fifteen".