1200406642445 has 4 divisors (see below), whose sum is σ = 1440487970940. Its totient is φ = 960325313952.

The previous prime is 1200406642441. The next prime is 1200406642447. The reversal of 1200406642445 is 5442466040021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 348291186244 + 852115456201 = 590162^2 + 923101^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200406642445 - 2² = 1200406642441 is a prime.

It is a super-2 number, since 2×1200406642445² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200406642399 and 1200406642408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200406642441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120040664240 + ... + 120040664249.

It is an arithmetic number, because the mean of its divisors is an integer number (360121992735).

Almost surely, 2^{1200406642445} is an apocalyptic number.

It is an amenable number.

1200406642445 is a deficient number, since it is larger than the sum of its proper divisors (240081328495).

1200406642445 is an equidigital number, since it uses as much as digits as its factorization.

1200406642445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240081328494.

The product of its (nonzero) digits is 184320, while the sum is 38.

The spelling of 1200406642445 in words is "one trillion, two hundred billion, four hundred six million, six hundred forty-two thousand, four hundred forty-five".