123011042 has 16 divisors (see below), whose sum is σ = 230046912. Its totient is φ = 47926320.

The previous prime is 123011041. The next prime is 123011071. The reversal of 123011042 is 240110321.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (123011041) 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, 399233 + ... + 399540.

It is an arithmetic number, because the mean of its divisors is an integer number (14377932).

Almost surely, 2^123011042 is an apocalyptic number.

123011042 is a deficient number, since it is larger than the sum of its proper divisors (107035870).

123011042 is a wasteful number, since it uses less digits than its factorization.

123011042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798793.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 123011042 is about 11091.0343070428. The cubic root of 123011042 is about 497.3338647141. Note that the first 3 decimals are identical.

Adding to 123011042 its reverse (240110321), we get a palindrome (363121363).

The spelling of 123011042 in words is "one hundred twenty-three million, eleven thousand, forty-two".