1240043400402 has 32 divisors (see below), whose sum is σ = 2537849869632. Its totient is φ = 403721278464.

The previous prime is 1240043400391. The next prime is 1240043400433. The reversal of 1240043400402 is 2040043400421.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9786718 + ... + 9912614.

It is an arithmetic number, because the mean of its divisors is an integer number (79307808426).

Almost surely, 2^{1240043400402} is an apocalyptic number.

1240043400402 is an abundant number, since it is smaller than the sum of its proper divisors (1297806469230).

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

1240043400402 is a wasteful number, since it uses less digits than its factorization.

1240043400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164122.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 1240043400402 its reverse (2040043400421), we get a palindrome (3280086800823).

The spelling of 1240043400402 in words is "one trillion, two hundred forty billion, forty-three million, four hundred thousand, four hundred two".