123442345 has 32 divisors (see below), whose sum is σ = 163989504. Its totient is φ = 88646400.

The previous prime is 123442303. The next prime is 123442381. The reversal of 123442345 is 543244321.

It is a happy number.

It is not a de Polignac number, because 123442345 - 2¹³ = 123434153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 646200 + ... + 646390.

It is an arithmetic number, because the mean of its divisors is an integer number (5124672).

Almost surely, 2^123442345 is an apocalyptic number.

It is an amenable number.

123442345 is a deficient number, since it is larger than the sum of its proper divisors (40547159).

123442345 is a wasteful number, since it uses less digits than its factorization.

123442345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its digits is 11520, while the sum is 28.

The square root of 123442345 is about 11110.4610615402. The cubic root of 123442345 is about 497.9144396376.

Adding to 123442345 its reverse (543244321), we get a palindrome (666686666).

The spelling of 123442345 in words is "one hundred twenty-three million, four hundred forty-two thousand, three hundred forty-five".