1240143421434 has 8 divisors (see below), whose sum is σ = 2480286842880. Its totient is φ = 413381140476.

The previous prime is 1240143421411. The next prime is 1240143421441. The reversal of 1240143421434 is 4341243410421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1240143421434 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1240143421395 and 1240143421404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103345285114 + ... + 103345285125.

It is an arithmetic number, because the mean of its divisors is an integer number (310035855360).

Almost surely, 2^{1240143421434} is an apocalyptic number.

1240143421434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1240143421434 is a wasteful number, since it uses less digits than its factorization.

1240143421434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206690570244.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 1240143421434 its reverse (4341243410421), we get a palindrome (5581386831855).

The spelling of 1240143421434 in words is "one trillion, two hundred forty billion, one hundred forty-three million, four hundred twenty-one thousand, four hundred thirty-four".