123542245321 has 16 divisors (see below), whose sum is σ = 136440158400. Its totient is φ = 110922987520.

The previous prime is 123542245313. The next prime is 123542245349.

123542245321 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 123542245321 - 2³ = 123542245313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123542245301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3129321 + ... + 3168553.

It is an arithmetic number, because the mean of its divisors is an integer number (8527509900).

Almost surely, 2^123542245321 is an apocalyptic number.

123542245321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123542245321 is a deficient number, since it is larger than the sum of its proper divisors (12897913079).

123542245321 is a wasteful number, since it uses less digits than its factorization.

123542245321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42776.

The product of its digits is 57600, while the sum is 34.

It can be divided in two parts, 123542 and 245321, that added together give a palindrome (368863).

The spelling of 123542245321 in words is "one hundred twenty-three billion, five hundred forty-two million, two hundred forty-five thousand, three hundred twenty-one".