20242430410421 has 4 divisors (see below), whose sum is σ = 21433161611052. Its totient is φ = 19051699209792.

The previous prime is 20242430410393. The next prime is 20242430410429. The reversal of 20242430410421 is 12401403424202.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11589190404100 + 8653240006321 = 3404290^2 + 2941639^2 .

It is a cyclic number.

It is not a de Polignac number, because 20242430410421 - 2¹⁸ = 20242430148277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20242430410429) 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, 595365600290 + ... + 595365600323.

It is an arithmetic number, because the mean of its divisors is an integer number (5358290402763).

Almost surely, 2^{20242430410421} is an apocalyptic number.

It is an amenable number.

20242430410421 is a deficient number, since it is larger than the sum of its proper divisors (1190731200631).

20242430410421 is a wasteful number, since it uses less digits than its factorization.

20242430410421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190731200630.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 20242430410421 its reverse (12401403424202), we get a palindrome (32643833834623).

The spelling of 20242430410421 in words is "twenty trillion, two hundred forty-two billion, four hundred thirty million, four hundred ten thousand, four hundred twenty-one".