1200442144 has 24 divisors (see below), whose sum is σ = 2578223088. Its totient is φ = 545655360.

The previous prime is 1200442127. The next prime is 1200442147. The reversal of 1200442144 is 4412440021.

It is a super-2 number, since 2×1200442144² = 2882122682182633472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1200442147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704822 + ... + 1705525.

It is an arithmetic number, because the mean of its divisors is an integer number (107425962).

Almost surely, 2^1200442144 is an apocalyptic number.

It is an amenable number.

1200442144 is an abundant number, since it is smaller than the sum of its proper divisors (1377780944).

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

1200442144 is a wasteful number, since it uses less digits than its factorization.

1200442144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410368 (or 3410360 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1200442144 is about 34647.3973625726. The cubic root of 1200442144 is about 1062.7890665205.

Adding to 1200442144 its reverse (4412440021), we get a palindrome (5612882165).

It can be divided in two parts, 1200 and 442144, that added together give a palindrome (443344).

The spelling of 1200442144 in words is "one billion, two hundred million, four hundred forty-two thousand, one hundred forty-four".