1200442401 has 12 divisors (see below), whose sum is σ = 1825234320. Its totient is φ = 758174040.

The previous prime is 1200442343. The next prime is 1200442409. The reversal of 1200442401 is 1042440021.

It is not a de Polignac number, because 1200442401 - 2⁶ = 1200442337 is a prime.

It is a super-3 number, since 3×1200442401³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1200442409) 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 11 ways as a sum of consecutive naturals, for example, 3509895 + ... + 3510236.

It is an arithmetic number, because the mean of its divisors is an integer number (152102860).

Almost surely, 2^1200442401 is an apocalyptic number.

It is an amenable number.

1200442401 is a deficient number, since it is larger than the sum of its proper divisors (624791919).

1200442401 is a wasteful number, since it uses less digits than its factorization.

1200442401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020156 (or 7020153 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1200442401 is about 34647.4010713646. The cubic root of 1200442401 is about 1062.7891423639.

Adding to 1200442401 its reverse (1042440021), we get a palindrome (2242882422).

The spelling of 1200442401 in words is "one billion, two hundred million, four hundred forty-two thousand, four hundred one".