1200423042 has 192 divisors, whose sum is σ = 3405991680. Its totient is φ = 296980992.

The previous prime is 1200423041. The next prime is 1200423047. The reversal of 1200423042 is 2403240021.

1200423042 is a `hidden beast` number, since 1 + 200 + 423 + 0 + 42 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1200423041) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1757233 + ... + 1757915.

It is an arithmetic number, because the mean of its divisors is an integer number (17739540).

Almost surely, 2^1200423042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200423042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1702995840).

1200423042 is an abundant number, since it is smaller than the sum of its proper divisors (2205568638).

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

1200423042 is a wasteful number, since it uses less digits than its factorization.

1200423042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1200423042 is about 34647.1216986347. The cubic root of 1200423042 is about 1062.7834292908.

Adding to 1200423042 its reverse (2403240021), we get a palindrome (3603663063).

The spelling of 1200423042 in words is "one billion, two hundred million, four hundred twenty-three thousand, forty-two".