23240122143421 has 4 divisors (see below), whose sum is σ = 23240142355132. Its totient is φ = 23240101931712.

The previous prime is 23240122143401. The next prime is 23240122143509. The reversal of 23240122143421 is 12434122104232.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14042549580921 + 9197572562500 = 3747339^2 + 3032750^2 .

It is a cyclic number.

It is not a de Polignac number, because 23240122143421 - 2²⁵ = 23240088588989 is a prime.

It is a super-2 number, since 2×23240122143421² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240122143401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8269926 + ... + 10717831.

It is an arithmetic number, because the mean of its divisors is an integer number (5810035588783).

Almost surely, 2^{23240122143421} is an apocalyptic number.

It is an amenable number.

23240122143421 is a deficient number, since it is larger than the sum of its proper divisors (20211711).

23240122143421 is a wasteful number, since it uses less digits than its factorization.

23240122143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20211710.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 23240122143421 its reverse (12434122104232), we get a palindrome (35674244247653).

The spelling of 23240122143421 in words is "twenty-three trillion, two hundred forty billion, one hundred twenty-two million, one hundred forty-three thousand, four hundred twenty-one".