140340215 has 8 divisors (see below), whose sum is σ = 168667008. Its totient is φ = 112099680.

The previous prime is 140340209. The next prime is 140340217. The reversal of 140340215 is 512043041.

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-140340215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140340217) 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, 17927 + ... + 24536.

It is an arithmetic number, because the mean of its divisors is an integer number (21083376).

Almost surely, 2^140340215 is an apocalyptic number.

140340215 is a deficient number, since it is larger than the sum of its proper divisors (28326793).

140340215 is an equidigital number, since it uses as much as digits as its factorization.

140340215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43129.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 140340215 is about 11846.5275502993. The cubic root of 140340215 is about 519.6696805016.

Adding to 140340215 its reverse (512043041), we get a palindrome (652383256).

The spelling of 140340215 in words is "one hundred forty million, three hundred forty thousand, two hundred fifteen".