1026423504021 has 16 divisors (see below), whose sum is σ = 1401078919680. Its totient is φ = 668040829680.

The previous prime is 1026423504019. The next prime is 1026423504023. The reversal of 1026423504021 is 1204053246201.

It is an interprime number because it is at equal distance from previous prime (1026423504019) and next prime (1026423504023).

It is not a de Polignac number, because 1026423504021 - 2¹ = 1026423504019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1026423504021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026423504023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1688115 + ... + 2214176.

It is an arithmetic number, because the mean of its divisors is an integer number (87567432480).

Almost surely, 2^{1026423504021} is an apocalyptic number.

It is an amenable number.

1026423504021 is a deficient number, since it is larger than the sum of its proper divisors (374655415659).

1026423504021 is a wasteful number, since it uses less digits than its factorization.

1026423504021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904376.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 1026423504021 in words is "one trillion, twenty-six billion, four hundred twenty-three million, five hundred four thousand, twenty-one".