1200045441 has 16 divisors (see below), whose sum is σ = 1873243008. Its totient is φ = 669014400.

The previous prime is 1200045403. The next prime is 1200045527. The reversal of 1200045441 is 1445400021.

It is a happy number.

It is not a de Polignac number, because 1200045441 - 2⁹ = 1200044929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1200045541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696030 + ... + 697751.

It is an arithmetic number, because the mean of its divisors is an integer number (117077688).

Almost surely, 2^1200045441 is an apocalyptic number.

It is an amenable number.

1200045441 is a deficient number, since it is larger than the sum of its proper divisors (673197567).

1200045441 is a wasteful number, since it uses less digits than its factorization.

1200045441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393832.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1200045441 is about 34641.6720295080. The cubic root of 1200045441 is about 1062.6719824211.

Adding to 1200045441 its reverse (1445400021), we get a palindrome (2645445462).

The spelling of 1200045441 in words is "one billion, two hundred million, forty-five thousand, four hundred forty-one".