1200023442 has 48 divisors (see below), whose sum is σ = 2676936600. Its totient is φ = 388233216.

The previous prime is 1200023437. The next prime is 1200023443. The reversal of 1200023442 is 2443200021.

1200023442 is a `hidden beast` number, since 1 + 200 + 0 + 23 + 442 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1192942521 + 7080921 = 34539^2 + 2661^2 .

It is a super-2 number, since 2×1200023442² = 2880112522699054728, which contains 22 as substring.

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 (1200023443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297028 + ... + 301040.

Almost surely, 2^1200023442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200023442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338468300).

1200023442 is an abundant number, since it is smaller than the sum of its proper divisors (1476913158).

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

1200023442 is a wasteful number, since it uses less digits than its factorization.

1200023442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507 (or 4504 counting only the distinct ones).

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

The square root of 1200023442 is about 34641.3545058504. The cubic root of 1200023442 is about 1062.6654888159.

Adding to 1200023442 its reverse (2443200021), we get a palindrome (3643223463).

The spelling of 1200023442 in words is "one billion, two hundred million, twenty-three thousand, four hundred forty-two".