420003510550021 has 8 divisors (see below), whose sum is σ = 438264953904960. Its totient is φ = 401742102291552.

The previous prime is 420003510549919. The next prime is 420003510550049. The reversal of 420003510550021 is 120055015300024.

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 420003510550021 - 2³⁵ = 419969150811653 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 (420003510550121) 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, 17333290 + ... + 33770548.

It is an arithmetic number, because the mean of its divisors is an integer number (54783119238120).

Almost surely, 2^{420003510550021} is an apocalyptic number.

It is an amenable number.

420003510550021 is a deficient number, since it is larger than the sum of its proper divisors (18261443354939).

420003510550021 is a wasteful number, since it uses less digits than its factorization.

420003510550021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17548235.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 420003510550021 its reverse (120055015300024), we get a palindrome (540058525850045).

The spelling of 420003510550021 in words is "four hundred twenty trillion, three billion, five hundred ten million, five hundred fifty thousand, twenty-one".