23421340120154 has 4 divisors (see below), whose sum is σ = 35132010180234. Its totient is φ = 11710670060076.

The previous prime is 23421340120147. The next prime is 23421340120159. The reversal of 23421340120154 is 45102104312432.

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

It can be written as a sum of positive squares in only one way, i.e., 23378897939929 + 42442180225 = 4835173^2 + 206015^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23421340120154.

It is not an unprimeable number, because it can be changed into a prime (23421340120159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5855335030037 + ... + 5855335030040.

Almost surely, 2^{23421340120154} is an apocalyptic number.

23421340120154 is a deficient number, since it is larger than the sum of its proper divisors (11710670060080).

23421340120154 is a wasteful number, since it uses less digits than its factorization.

23421340120154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11710670060079.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 23421340120154 its reverse (45102104312432), we get a palindrome (68523444432586).

The spelling of 23421340120154 in words is "twenty-three trillion, four hundred twenty-one billion, three hundred forty million, one hundred twenty thousand, one hundred fifty-four".