212140240423 has 8 divisors (see below), whose sum is σ = 214993297440. Its totient is φ = 209297616000.

The previous prime is 212140240337. The next prime is 212140240513. The reversal of 212140240423 is 324042041212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212140240423 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 (212140249423) 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, 2567203 + ... + 2648548.

It is an arithmetic number, because the mean of its divisors is an integer number (26874162180).

Almost surely, 2^212140240423 is an apocalyptic number.

212140240423 is a deficient number, since it is larger than the sum of its proper divisors (2853057017).

212140240423 is an equidigital number, since it uses as much as digits as its factorization.

212140240423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216297.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 212140240423 its reverse (324042041212), we get a palindrome (536182281635).

The spelling of 212140240423 in words is "two hundred twelve billion, one hundred forty million, two hundred forty thousand, four hundred twenty-three".