140420213 has 4 divisors (see below), whose sum is σ = 140569440. Its totient is φ = 140270988.

The previous prime is 140420191. The next prime is 140420219. The reversal of 140420213 is 312024041.

140420213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 140420213 - 2¹⁴ = 140403829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140420191 and 140420200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140420219) 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, 73193 + ... + 75086.

It is an arithmetic number, because the mean of its divisors is an integer number (35142360).

Almost surely, 2^140420213 is an apocalyptic number.

It is an amenable number.

140420213 is a deficient number, since it is larger than the sum of its proper divisors (149227).

140420213 is an equidigital number, since it uses as much as digits as its factorization.

140420213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149226.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 140420213 is about 11849.9035017168. The cubic root of 140420213 is about 519.7684040177.

Adding to 140420213 its reverse (312024041), we get a palindrome (452444254).

The spelling of 140420213 in words is "one hundred forty million, four hundred twenty thousand, two hundred thirteen".