21333400142 has 4 divisors (see below), whose sum is σ = 32000100216. Its totient is φ = 10666700070.

The previous prime is 21333400141. The next prime is 21333400163. The reversal of 21333400142 is 24100433312.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21333400142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333400141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333350034 + ... + 5333350037.

It is an arithmetic number, because the mean of its divisors is an integer number (8000025054).

Almost surely, 2^21333400142 is an apocalyptic number.

21333400142 is a deficient number, since it is larger than the sum of its proper divisors (10666700074).

21333400142 is a wasteful number, since it uses less digits than its factorization.

21333400142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10666700073.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21333400142 its reverse (24100433312), we get a palindrome (45433833454).

The spelling of 21333400142 in words is "twenty-one billion, three hundred thirty-three million, four hundred thousand, one hundred forty-two".