1230123042 has 24 divisors (see below), whose sum is σ = 2805544560. Its totient is φ = 388459800.

The previous prime is 1230123031. The next prime is 1230123071. The reversal of 1230123042 is 2403210321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1798084 + ... + 1798767.

It is an arithmetic number, because the mean of its divisors is an integer number (116897690).

Almost surely, 2^1230123042 is an apocalyptic number.

1230123042 is an abundant number, since it is smaller than the sum of its proper divisors (1575421518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1230123042 is a wasteful number, since it uses less digits than its factorization.

1230123042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596878 (or 3596875 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1230123042 is about 35073.1099562043. The cubic root of 1230123042 is about 1071.4769954038.

Adding to 1230123042 its reverse (2403210321), we get a palindrome (3633333363).

The spelling of 1230123042 in words is "one billion, two hundred thirty million, one hundred twenty-three thousand, forty-two".