1240401023412 has 12 divisors (see below), whose sum is σ = 2894269054656. Its totient is φ = 413467007800.

The previous prime is 1240401023401. The next prime is 1240401023413. The reversal of 1240401023412 is 2143201040421.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240401023413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51683375964 + ... + 51683375987.

It is an arithmetic number, because the mean of its divisors is an integer number (241189087888).

Almost surely, 2^{1240401023412} is an apocalyptic number.

1240401023412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1240401023412 is an abundant number, since it is smaller than the sum of its proper divisors (1653868031244).

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

1240401023412 is a wasteful number, since it uses less digits than its factorization.

1240401023412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103366751958 (or 103366751956 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1240401023412 its reverse (2143201040421), we get a palindrome (3383602063833).

The spelling of 1240401023412 in words is "one trillion, two hundred forty billion, four hundred one million, twenty-three thousand, four hundred twelve".