140223001 has 4 divisors (see below), whose sum is σ = 142868772. Its totient is φ = 137577232.

The previous prime is 140222981. The next prime is 140223011. The reversal of 140223001 is 100322041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100322041 = 1229 ⋅81629.

It can be written as a sum of positive squares in 2 ways, for example, as 107744400 + 32478601 = 10380^2 + 5699^2 .

It is a cyclic number.

It is not a de Polignac number, because 140223001 - 2⁵ = 140222969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140223011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1322806 + ... + 1322911.

It is an arithmetic number, because the mean of its divisors is an integer number (35717193).

Almost surely, 2^140223001 is an apocalyptic number.

It is an amenable number.

140223001 is a deficient number, since it is larger than the sum of its proper divisors (2645771).

140223001 is an equidigital number, since it uses as much as digits as its factorization.

140223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645770.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 140223001 is about 11841.5793287889. The cubic root of 140223001 is about 519.5249618783.

Adding to 140223001 its reverse (100322041), we get a palindrome (240545042).

The spelling of 140223001 in words is "one hundred forty million, two hundred twenty-three thousand, one".