1023424015421 has 4 divisors (see below), whose sum is σ = 1023426613500. Its totient is φ = 1023421417344.

The previous prime is 1023424015379. The next prime is 1023424015447. The reversal of 1023424015421 is 1245104243201.

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 807821666521 + 215602348900 = 898789^2 + 464330^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023424015421 - 2³⁰ = 1022350273597 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 (1023424015451) 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, 572846 + ... + 1541103.

It is an arithmetic number, because the mean of its divisors is an integer number (255856653375).

Almost surely, 2^{1023424015421} is an apocalyptic number.

It is an amenable number.

1023424015421 is a deficient number, since it is larger than the sum of its proper divisors (2598079).

1023424015421 is an equidigital number, since it uses as much as digits as its factorization.

1023424015421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598078.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 1023424015421 its reverse (1245104243201), we get a palindrome (2268528258622).

The spelling of 1023424015421 in words is "one trillion, twenty-three billion, four hundred twenty-four million, fifteen thousand, four hundred twenty-one".