1240204245354 has 24 divisors (see below), whose sum is σ = 2713714243812. Its totient is φ = 409308331200.

The previous prime is 1240204245341. The next prime is 1240204245359. The reversal of 1240204245354 is 4535424020421.

1240204245354 is a `hidden beast` number, since 1 + 2 + 40 + 20 + 4 + 245 + 354 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1211177286225 + 29026959129 = 1100535^2 + 170373^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1240204245359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341088459 + ... + 341092094.

Almost surely, 2^{1240204245354} is an apocalyptic number.

1240204245354 is an abundant number, since it is smaller than the sum of its proper divisors (1473509998458).

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

1240204245354 is a wasteful number, since it uses less digits than its factorization.

1240204245354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682180662 (or 682180659 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 1240204245354 its reverse (4535424020421), we get a palindrome (5775628265775).

The spelling of 1240204245354 in words is "one trillion, two hundred forty billion, two hundred four million, two hundred forty-five thousand, three hundred fifty-four".