1240044142351 has 4 divisors (see below), whose sum is σ = 1417193305552. Its totient is φ = 1062894979152.

The previous prime is 1240044142349. The next prime is 1240044142373. The reversal of 1240044142351 is 1532414400421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1240044142351 - 2¹ = 1240044142349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220044142351) 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, 88574581590 + ... + 88574581603.

It is an arithmetic number, because the mean of its divisors is an integer number (354298326388).

Almost surely, 2^{1240044142351} is an apocalyptic number.

1240044142351 is a deficient number, since it is larger than the sum of its proper divisors (177149163201).

1240044142351 is an equidigital number, since it uses as much as digits as its factorization.

1240044142351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177149163200.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 1240044142351 its reverse (1532414400421), we get a palindrome (2772458542772).

The spelling of 1240044142351 in words is "one trillion, two hundred forty billion, forty-four million, one hundred forty-two thousand, three hundred fifty-one".