1040234143421 has 16 divisors (see below), whose sum is σ = 1150071229440. Its totient is φ = 932973823920.

The previous prime is 1040234143397. The next prime is 1040234143439. The reversal of 1040234143421 is 1243414320401.

It is a cyclic number.

It is not a de Polignac number, because 1040234143421 - 2⁶ = 1040234143357 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 (1040234143471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135875 + ... + 1448768.

It is an arithmetic number, because the mean of its divisors is an integer number (71879451840).

Almost surely, 2^{1040234143421} is an apocalyptic number.

1040234143421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1040234143421 is a deficient number, since it is larger than the sum of its proper divisors (109837086019).

1040234143421 is a wasteful number, since it uses less digits than its factorization.

1040234143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585456.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 1040234143421 its reverse (1243414320401), we get a palindrome (2283648463822).

The spelling of 1040234143421 in words is "one trillion, forty billion, two hundred thirty-four million, one hundred forty-three thousand, four hundred twenty-one".