1200406642444 has 12 divisors (see below), whose sum is σ = 2110131857344. Its totient is φ = 597511826064.

The previous prime is 1200406642441. The next prime is 1200406642447. The reversal of 1200406642444 is 4442466040021.

It is an interprime number because it is at equal distance from previous prime (1200406642441) and next prime (1200406642447).

It is a super-2 number, since 2×1200406642444² (a number of 25 digits) contains 22 as substring.

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, 672872787 + ... + 672874570.

Almost surely, 2^{1200406642444} is an apocalyptic number.

It is an amenable number.

1200406642444 is a deficient number, since it is larger than the sum of its proper divisors (909725214900).

1200406642444 is a wasteful number, since it uses less digits than its factorization.

1200406642444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345747584 (or 1345747582 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 37.

The spelling of 1200406642444 in words is "one trillion, two hundred billion, four hundred six million, six hundred forty-two thousand, four hundred forty-four".