213242412542 has 16 divisors (see below), whose sum is σ = 338848319952. Its totient is φ = 100299239040.

The previous prime is 213242412521. The next prime is 213242412553. The reversal of 213242412542 is 245214242312.

213242412542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213242412499 and 213242412508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1497509 + ... + 1633712.

It is an arithmetic number, because the mean of its divisors is an integer number (21178019997).

Almost surely, 2^213242412542 is an apocalyptic number.

213242412542 is a deficient number, since it is larger than the sum of its proper divisors (125605907410).

213242412542 is a wasteful number, since it uses less digits than its factorization.

213242412542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133243.

The product of its digits is 30720, while the sum is 32.

Adding to 213242412542 its reverse (245214242312), we get a palindrome (458456654854).

The spelling of 213242412542 in words is "two hundred thirteen billion, two hundred forty-two million, four hundred twelve thousand, five hundred forty-two".