123442045 has 8 divisors (see below), whose sum is σ = 148276440. Its totient is φ = 98656320.

The previous prime is 123442043. The next prime is 123442061. The reversal of 123442045 is 540244321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14907321 + 108534724 = 3861^2 + 10418^2 .

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

It is not a de Polignac number, because 123442045 - 2¹ = 123442043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123442043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6330 + ... + 16939.

It is an arithmetic number, because the mean of its divisors is an integer number (18534555).

Almost surely, 2^123442045 is an apocalyptic number.

It is an amenable number.

123442045 is a deficient number, since it is larger than the sum of its proper divisors (24834395).

123442045 is a wasteful number, since it uses less digits than its factorization.

123442045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24335.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 123442045 is about 11110.4475607421. The cubic root of 123442045 is about 497.9140362794.

Adding to 123442045 its reverse (540244321), we get a palindrome (663686366).

The spelling of 123442045 in words is "one hundred twenty-three million, four hundred forty-two thousand, forty-five".