1240213431402 has 24 divisors (see below), whose sum is σ = 2931413565600. Its totient is φ = 375822251880.

The previous prime is 1240213431383. The next prime is 1240213431407. The reversal of 1240213431402 is 2041343120421.

1240213431402 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 213 + 43 + 1 + 402 = 666.

It is not an unprimeable number, because it can be changed into a prime (1240213431407) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3131851902 + ... + 3131852297.

It is an arithmetic number, because the mean of its divisors is an integer number (122142231900).

Almost surely, 2^{1240213431402} is an apocalyptic number.

1240213431402 is an abundant number, since it is smaller than the sum of its proper divisors (1691200134198).

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

1240213431402 is a wasteful number, since it uses less digits than its factorization.

1240213431402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6263704218 (or 6263704215 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1240213431402 its reverse (2041343120421), we get a palindrome (3281556551823).

The spelling of 1240213431402 in words is "one trillion, two hundred forty billion, two hundred thirteen million, four hundred thirty-one thousand, four hundred two".