140145601 has 4 divisors (see below), whose sum is σ = 146238912. Its totient is φ = 134052292.

The previous prime is 140145571. The next prime is 140145613. The reversal of 140145601 is 106541041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140145601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140145631) 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, 3046621 + ... + 3046666.

It is an arithmetic number, because the mean of its divisors is an integer number (36559728).

Almost surely, 2^140145601 is an apocalyptic number.

It is an amenable number.

140145601 is a deficient number, since it is larger than the sum of its proper divisors (6093311).

140145601 is an equidigital number, since it uses as much as digits as its factorization.

140145601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6093310.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 140145601 is about 11838.3107325327. The cubic root of 140145601 is about 519.4293555165.

Adding to 140145601 its reverse (106541041), we get a palindrome (246686642).

The spelling of 140145601 in words is "one hundred forty million, one hundred forty-five thousand, six hundred one".