123240220042 has 8 divisors (see below), whose sum is σ = 185153296032. Its totient is φ = 61522454700.

The previous prime is 123240220013. The next prime is 123240220057. The reversal of 123240220042 is 240022042321.

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

It is a junction number, because it is equal to n+sod(n) for n = 123240219995 and 123240220022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48826084 + ... + 48828607.

It is an arithmetic number, because the mean of its divisors is an integer number (23144162004).

Almost surely, 2^123240220042 is an apocalyptic number.

123240220042 is a deficient number, since it is larger than the sum of its proper divisors (61913075990).

123240220042 is an equidigital number, since it uses as much as digits as its factorization.

123240220042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97655324.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 123240220042 its reverse (240022042321), we get a palindrome (363262262363).

The spelling of 123240220042 in words is "one hundred twenty-three billion, two hundred forty million, two hundred twenty thousand, forty-two".