140223635 has 4 divisors (see below), whose sum is σ = 168268368. Its totient is φ = 112178904.

The previous prime is 140223631. The next prime is 140223641. The reversal of 140223635 is 536322041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 536322041 = 31 ⋅17300711.

It is a cyclic number.

It is not a de Polignac number, because 140223635 - 2² = 140223631 is a prime.

It is a super-2 number, since 2×140223635² = 39325335625226450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140223631) 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, 14022359 + ... + 14022368.

It is an arithmetic number, because the mean of its divisors is an integer number (42067092).

Almost surely, 2^140223635 is an apocalyptic number.

140223635 is a deficient number, since it is larger than the sum of its proper divisors (28044733).

140223635 is an equidigital number, since it uses as much as digits as its factorization.

140223635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28044732.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 140223635 is about 11841.6060988364. The cubic root of 140223635 is about 519.5257448653.

Adding to 140223635 its reverse (536322041), we get a palindrome (676545676).

The spelling of 140223635 in words is "one hundred forty million, two hundred twenty-three thousand, six hundred thirty-five".