1042340541421 has 8 divisors (see below), whose sum is σ = 1045984552704. Its totient is φ = 1038700899600.

The previous prime is 1042340541391. The next prime is 1042340541461. The reversal of 1042340541421 is 1241450432401.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1042340541421 - 2¹³ = 1042340533229 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 (1042340541461) 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 7 ways as a sum of consecutive naturals, for example, 614065 + ... + 1568998.

It is an arithmetic number, because the mean of its divisors is an integer number (130748069088).

Almost surely, 2^{1042340541421} is an apocalyptic number.

It is an amenable number.

1042340541421 is a deficient number, since it is larger than the sum of its proper divisors (3644011283).

1042340541421 is a wasteful number, since it uses less digits than its factorization.

1042340541421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184731.

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

Adding to 1042340541421 its reverse (1241450432401), we get a palindrome (2283790973822).

The spelling of 1042340541421 in words is "one trillion, forty-two billion, three hundred forty million, five hundred forty-one thousand, four hundred twenty-one".