1201404143440 has 40 divisors (see below), whose sum is σ = 2824649646120. Its totient is φ = 475162085376.

The previous prime is 1201404143417. The next prime is 1201404143579. The reversal of 1201404143440 is 443414041021.

It can be written as a sum of positive squares in 4 ways, for example, as 25081690384 + 1176322453056 = 158372^2 + 1084584^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1201404143399 and 1201404143408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84361149 + ... + 84375388.

It is an arithmetic number, because the mean of its divisors is an integer number (70616241153).

Almost surely, 2^{1201404143440} is an apocalyptic number.

1201404143440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201404143440 is an abundant number, since it is smaller than the sum of its proper divisors (1623245502680).

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

1201404143440 is a wasteful number, since it uses less digits than its factorization.

1201404143440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168736639 (or 168736633 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1201404143440 its reverse (443414041021), we get a palindrome (1644818184461).

The spelling of 1201404143440 in words is "one trillion, two hundred one billion, four hundred four million, one hundred forty-three thousand, four hundred forty".