123203442 has 32 divisors (see below), whose sum is σ = 253903104. Its totient is φ = 39830400.

The previous prime is 123203441. The next prime is 123203447. The reversal of 123203442 is 244302321.

It is not an unprimeable number, because it can be changed into a prime (123203441) 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, 43143 + ... + 45909.

It is an arithmetic number, because the mean of its divisors is an integer number (7934472).

Almost surely, 2^123203442 is an apocalyptic number.

123203442 is an abundant number, since it is smaller than the sum of its proper divisors (130699662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123203442 is a wasteful number, since it uses less digits than its factorization.

123203442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 123203442 is about 11099.7045906637. The cubic root of 123203442 is about 497.5930208291.

Adding to 123203442 its reverse (244302321), we get a palindrome (367505763).

The spelling of 123203442 in words is "one hundred twenty-three million, two hundred three thousand, four hundred forty-two".