21334401342 has 24 divisors (see below), whose sum is σ = 46228053144. Its totient is φ = 7110926064.

The previous prime is 21334401299. The next prime is 21334401343. The reversal of 21334401342 is 24310443312.

21334401342 is a `hidden beast` number, since 213 + 3 + 4 + 401 + 3 + 42 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334401343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250413 + ... + 324615.

It is an arithmetic number, because the mean of its divisors is an integer number (1926168881).

Almost surely, 2^21334401342 is an apocalyptic number.

21334401342 is an abundant number, since it is smaller than the sum of its proper divisors (24893651802).

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

21334401342 is a wasteful number, since it uses less digits than its factorization.

21334401342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90184 (or 90181 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21334401342 its reverse (24310443312), we get a palindrome (45644844654).

The spelling of 21334401342 in words is "twenty-one billion, three hundred thirty-four million, four hundred one thousand, three hundred forty-two".