1200402344440 has 128 divisors (see below), whose sum is σ = 3194875353600. Its totient is φ = 401641320960.

The previous prime is 1200402344359. The next prime is 1200402344507. The reversal of 1200402344440 is 444432040021.

It is a junction number, because it is equal to n+sod(n) for n = 1200402344399 and 1200402344408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2414026 + ... + 2868505.

It is an arithmetic number, because the mean of its divisors is an integer number (24959963700).

Almost surely, 2^{1200402344440} is an apocalyptic number.

1200402344440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200402344440 is an abundant number, since it is smaller than the sum of its proper divisors (1994473009160).

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

1200402344440 is a wasteful number, since it uses less digits than its factorization.

1200402344440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282597 (or 5282593 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 1200402344440 its reverse (444432040021), we get a palindrome (1644834384461).

The spelling of 1200402344440 in words is "one trillion, two hundred billion, four hundred two million, three hundred forty-four thousand, four hundred forty".