234120105515421 has 24 divisors (see below), whose sum is σ = 342750309542784. Its totient is φ = 153979795463040.

The previous prime is 234120105515411. The next prime is 234120105515449. The reversal of 234120105515421 is 124515501021432.

234120105515421 is a `hidden beast` number, since 2 + 3 + 4 + 1 + 2 + 0 + 105 + 5 + 1 + 542 + 1 = 666.

It is not a de Polignac number, because 234120105515421 - 2⁵ = 234120105515389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234120105515411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 504156661 + ... + 504620826.

It is an arithmetic number, because the mean of its divisors is an integer number (14281262897616).

Almost surely, 2^{234120105515421} is an apocalyptic number.

It is an amenable number.

234120105515421 is a deficient number, since it is larger than the sum of its proper divisors (108630204027363).

234120105515421 is a wasteful number, since it uses less digits than its factorization.

234120105515421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008777841 (or 1008777838 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 234120105515421 its reverse (124515501021432), we get a palindrome (358635606536853).

The spelling of 234120105515421 in words is "two hundred thirty-four trillion, one hundred twenty billion, one hundred five million, five hundred fifteen thousand, four hundred twenty-one".