1213430142240 has 144 divisors (see below), whose sum is σ = 4294194585408. Its totient is φ = 323581360896.

The previous prime is 1213430142229. The next prime is 1213430142241. The reversal of 1213430142240 is 422410343121.

1213430142240 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 430 + 1 + 4 + 224 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1213430142241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15565932 + ... + 15643691.

It is an arithmetic number, because the mean of its divisors is an integer number (29820795732).

Almost surely, 2^{1213430142240} is an apocalyptic number.

1213430142240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213430142240 is an abundant number, since it is smaller than the sum of its proper divisors (3080764443168).

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

1213430142240 is an equidigital number, since it uses as much as digits as its factorization.

1213430142240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31209653 (or 31209633 counting only the distinct ones).

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

Adding to 1213430142240 its reverse (422410343121), we get a palindrome (1635840485361).

The spelling of 1213430142240 in words is "one trillion, two hundred thirteen billion, four hundred thirty million, one hundred forty-two thousand, two hundred forty".