123503442 has 16 divisors (see below), whose sum is σ = 254975232. Its totient is φ = 39839760.

The previous prime is 123503383. The next prime is 123503449. The reversal of 123503442 is 244305321.

It is not an unprimeable number, because it can be changed into a prime (123503449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331813 + ... + 332184.

It is an arithmetic number, because the mean of its divisors is an integer number (15935952).

Almost surely, 2^123503442 is an apocalyptic number.

123503442 is an abundant number, since it is smaller than the sum of its proper divisors (131471790).

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

123503442 is a wasteful number, since it uses less digits than its factorization.

123503442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664033.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 123503442 is about 11113.2102472688. The cubic root of 123503442 is about 497.9965726123.

Adding to 123503442 its reverse (244305321), we get a palindrome (367808763).

The spelling of 123503442 in words is "one hundred twenty-three million, five hundred three thousand, four hundred forty-two".