123030442 has 4 divisors (see below), whose sum is σ = 184545666. Its totient is φ = 61515220.

The previous prime is 123030431. The next prime is 123030449. The reversal of 123030442 is 244030321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 86657481 + 36372961 = 9309^2 + 6031^2 .

It is not an unprimeable number, because it can be changed into a prime (123030449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30757609 + ... + 30757612.

Almost surely, 2^123030442 is an apocalyptic number.

123030442 is a deficient number, since it is larger than the sum of its proper divisors (61515224).

123030442 is an equidigital number, since it uses as much as digits as its factorization.

123030442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61515223.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 123030442 is about 11091.9088528531. The cubic root of 123030442 is about 497.3600080848.

Adding to 123030442 its reverse (244030321), we get a palindrome (367060763).

The spelling of 123030442 in words is "one hundred twenty-three million, thirty thousand, four hundred forty-two".