23420400134421 has 8 divisors (see below), whose sum is σ = 31227856913440. Its totient is φ = 15613271722512.

The previous prime is 23420400134419. The next prime is 23420400134459. The reversal of 23420400134421 is 12443100402432.

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

It is not a de Polignac number, because 23420400134421 - 2¹ = 23420400134419 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 (23420400154421) 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, 81925306 + ... + 82210683.

It is an arithmetic number, because the mean of its divisors is an integer number (3903482114180).

Almost surely, 2^{23420400134421} is an apocalyptic number.

It is an amenable number.

23420400134421 is a deficient number, since it is larger than the sum of its proper divisors (7807456779019).

23420400134421 is a wasteful number, since it uses less digits than its factorization.

23420400134421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164183555.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 23420400134421 its reverse (12443100402432), we get a palindrome (35863500536853).

The spelling of 23420400134421 in words is "twenty-three trillion, four hundred twenty billion, four hundred million, one hundred thirty-four thousand, four hundred twenty-one".