1231452442450 has 12 divisors (see below), whose sum is σ = 2290501543050. Its totient is φ = 492580976960.

The previous prime is 1231452442277. The next prime is 1231452442469. The reversal of 1231452442450 is 542442541321.

It can be written as a sum of positive squares in 3 ways, for example, as 793725973569 + 437726468881 = 890913^2 + 661609^2 .

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 5 ways as a sum of consecutive naturals, for example, 12314524375 + ... + 12314524474.

Almost surely, 2^{1231452442450} is an apocalyptic number.

1231452442450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231452442450 is a deficient number, since it is larger than the sum of its proper divisors (1059049100600).

1231452442450 is a wasteful number, since it uses less digits than its factorization.

1231452442450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24629048861 (or 24629048856 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 1231452442450 its reverse (542442541321), we get a palindrome (1773894983771).

The spelling of 1231452442450 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-two million, four hundred forty-two thousand, four hundred fifty".