21411142142 has 64 divisors (see below), whose sum is σ = 37427987520. Its totient is φ = 9102772224.

The previous prime is 21411142127. The next prime is 21411142153. The reversal of 21411142142 is 24124111412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2954948 + ... + 2962184.

It is an arithmetic number, because the mean of its divisors is an integer number (584812305).

Almost surely, 2^21411142142 is an apocalyptic number.

21411142142 is a deficient number, since it is larger than the sum of its proper divisors (16016845378).

21411142142 is a wasteful number, since it uses less digits than its factorization.

21411142142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7437.

The product of its digits is 512, while the sum is 23.

Adding to 21411142142 its reverse (24124111412), we get a palindrome (45535253554).

The spelling of 21411142142 in words is "twenty-one billion, four hundred eleven million, one hundred forty-two thousand, one hundred forty-two".