1231452442449 has 6 divisors (see below), whose sum is σ = 1778764639106. Its totient is φ = 820968294960.

The previous prime is 1231452442277. The next prime is 1231452442469. The reversal of 1231452442449 is 9442442541321.

1231452442449 is a `hidden beast` number, since 1 + 2 + 3 + 145 + 24 + 42 + 449 = 666.

It can be written as a sum of positive squares in only one way, i.e., 656877830400 + 574574612049 = 810480^2 + 758007^2 .

It is not a de Polignac number, because 1231452442449 - 2¹⁷ = 1231452311377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231452442469) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 68414024572 + ... + 68414024589.

Almost surely, 2^{1231452442449} is an apocalyptic number.

It is an amenable number.

1231452442449 is a deficient number, since it is larger than the sum of its proper divisors (547312196657).

1231452442449 is a wasteful number, since it uses less digits than its factorization.

1231452442449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136828049167 (or 136828049164 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

The spelling of 1231452442449 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-two million, four hundred forty-two thousand, four hundred forty-nine".