1240434431152 has 40 divisors (see below), whose sum is σ = 2820910742816. Its totient is φ = 517246788096.

The previous prime is 1240434431143. The next prime is 1240434431209. The reversal of 1240434431152 is 2511344340421.

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 7 ways as a sum of consecutive naturals, for example, 149662173 + ... + 149670460.

Almost surely, 2^{1240434431152} is an apocalyptic number.

It is an amenable number.

1240434431152 is an abundant number, since it is smaller than the sum of its proper divisors (1580476311664).

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

1240434431152 is a wasteful number, since it uses less digits than its factorization.

1240434431152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299332685 (or 299332679 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 1240434431152 its reverse (2511344340421), we get a palindrome (3751778771573).

The spelling of 1240434431152 in words is "one trillion, two hundred forty billion, four hundred thirty-four million, four hundred thirty-one thousand, one hundred fifty-two".