213421220142 has 32 divisors (see below), whose sum is σ = 459850578432. Its totient is φ = 65643195744.

The previous prime is 213421220141. The next prime is 213421220197. The reversal of 213421220142 is 241022124312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213421220141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310378 + ... + 723309.

It is an arithmetic number, because the mean of its divisors is an integer number (14370330576).

Almost surely, 2^213421220142 is an apocalyptic number.

213421220142 is an abundant number, since it is smaller than the sum of its proper divisors (246429358290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213421220142 is a wasteful number, since it uses less digits than its factorization.

213421220142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036352.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 213421220142 its reverse (241022124312), we get a palindrome (454443344454).

The spelling of 213421220142 in words is "two hundred thirteen billion, four hundred twenty-one million, two hundred twenty thousand, one hundred forty-two".