1145402121205 has 8 divisors (see below), whose sum is σ = 1455334459992. Its totient is φ = 862420420608.

The previous prime is 1145402121179. The next prime is 1145402121209. The reversal of 1145402121205 is 5021212045411.

It can be written as a sum of positive squares in 4 ways, for example, as 411170783076 + 734231338129 = 641226^2 + 856873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145402121205 - 2⁹ = 1145402120693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145402121209) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6737659452 + ... + 6737659621.

It is an arithmetic number, because the mean of its divisors is an integer number (181916807499).

Almost surely, 2^{1145402121205} is an apocalyptic number.

It is an amenable number.

1145402121205 is a deficient number, since it is larger than the sum of its proper divisors (309932338787).

1145402121205 is a wasteful number, since it uses less digits than its factorization.

1145402121205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13475319095.

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 1145402121205 its reverse (5021212045411), we get a palindrome (6166614166616).

The spelling of 1145402121205 in words is "one trillion, one hundred forty-five billion, four hundred two million, one hundred twenty-one thousand, two hundred five".