123145042 has 48 divisors (see below), whose sum is σ = 210677760. Its totient is φ = 53778816.

The previous prime is 123145037. The next prime is 123145067. The reversal of 123145042 is 240541321.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 969583 + ... + 969709.

It is an arithmetic number, because the mean of its divisors is an integer number (4389120).

Almost surely, 2^123145042 is an apocalyptic number.

123145042 is a deficient number, since it is larger than the sum of its proper divisors (87532718).

123145042 is a wasteful number, since it uses less digits than its factorization.

123145042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 123145042 is about 11097.0735782007. The cubic root of 123145042 is about 497.5143865944.

Adding to 123145042 its reverse (240541321), we get a palindrome (363686363).

The spelling of 123145042 in words is "one hundred twenty-three million, one hundred forty-five thousand, forty-two".