420990570 has 192 divisors, whose sum is σ = 1469954304. Its totient is φ = 80732160.

The previous prime is 420990539. The next prime is 420990587. The reversal of 420990570 is 75099024.

420990570 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 87754 + ... + 92426.

It is an arithmetic number, because the mean of its divisors is an integer number (7656012).

Almost surely, 2^420990570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420990570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734977152).

420990570 is an abundant number, since it is smaller than the sum of its proper divisors (1048963734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420990570 is a wasteful number, since it uses less digits than its factorization.

420990570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717 (or 4714 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 420990570 is about 20518.0547323571. The cubic root of 420990570 is about 749.4755266558.

The spelling of 420990570 in words is "four hundred twenty million, nine hundred ninety thousand, five hundred seventy".