1242345563136 has 132 divisors (see below), whose sum is σ = 3674740771884. Its totient is φ = 404014694400.

The previous prime is 1242345563131. The next prime is 1242345563189. The reversal of 1242345563136 is 6313655432421.

1242345563136 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 3 + 4 + 5 + 5 + 631 + 3 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 234008257536 + 1008337305600 = 483744^2 + 1004160^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1242345563091 and 1242345563100.

It is not an unprimeable number, because it can be changed into a prime (1242345563131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1266085 + ... + 2021796.

Almost surely, 2^{1242345563136} is an apocalyptic number.

1242345563136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1242345563136 is an abundant number, since it is smaller than the sum of its proper divisors (2432395208748).

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

1242345563136 is a wasteful number, since it uses less digits than its factorization.

1242345563136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287948 (or 3287927 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 1242345563136 in words is "one trillion, two hundred forty-two billion, three hundred forty-five million, five hundred sixty-three thousand, one hundred thirty-six".