321240042123 has 48 divisors (see below), whose sum is σ = 585356518656. Its totient is φ = 154041168960.

The previous prime is 321240042107. The next prime is 321240042131.

It is a happy number.

321240042123 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 321240042123 - 2⁴ = 321240042107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321240042093 and 321240042102.

It is not an unprimeable number, because it can be changed into a prime (321240042023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7619911 + ... + 7661952.

It is an arithmetic number, because the mean of its divisors is an integer number (12194927472).

Almost surely, 2^321240042123 is an apocalyptic number.

321240042123 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

321240042123 is a deficient number, since it is larger than the sum of its proper divisors (264116476533).

321240042123 is a wasteful number, since it uses less digits than its factorization.

321240042123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15281904 (or 15281897 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

It can be divided in two parts, 3212400 and 42123, that added together give a palindrome (3254523).

The spelling of 321240042123 in words is "three hundred twenty-one billion, two hundred forty million, forty-two thousand, one hundred twenty-three".