21423120141 has 8 divisors (see below), whose sum is σ = 30067537120. Its totient is φ = 13530391632.

The previous prime is 21423120137. The next prime is 21423120181. The reversal of 21423120141 is 14102132412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21423120141 - 2² = 21423120137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21423120181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187922050 + ... + 187922163.

It is an arithmetic number, because the mean of its divisors is an integer number (3758442140).

Almost surely, 2^21423120141 is an apocalyptic number.

It is an amenable number.

21423120141 is a deficient number, since it is larger than the sum of its proper divisors (8644416979).

21423120141 is a wasteful number, since it uses less digits than its factorization.

21423120141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375844235.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21423120141 its reverse (14102132412), we get a palindrome (35525252553).

The spelling of 21423120141 in words is "twenty-one billion, four hundred twenty-three million, one hundred twenty thousand, one hundred forty-one".