20142663463421 has 8 divisors (see below), whose sum is σ = 20472954595704. Its totient is φ = 19812375025920.

The previous prime is 20142663463331. The next prime is 20142663463459. The reversal of 20142663463421 is 12436436624102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2481774883225 + 17660888580196 = 1575365^2 + 4202486^2 .

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 20142663463421 - 2²⁶ = 20142596354557 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 (20142663463721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19133825 + ... + 20159081.

It is an arithmetic number, because the mean of its divisors is an integer number (2559119324463).

Almost surely, 2^{20142663463421} is an apocalyptic number.

It is an amenable number.

20142663463421 is a deficient number, since it is larger than the sum of its proper divisors (330291132283).

20142663463421 is a wasteful number, since it uses less digits than its factorization.

20142663463421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347391.

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 20142663463421 in words is "twenty trillion, one hundred forty-two billion, six hundred sixty-three million, four hundred sixty-three thousand, four hundred twenty-one".