420024646 has 4 divisors (see below), whose sum is σ = 630036972. Its totient is φ = 210012322.

The previous prime is 420024637. The next prime is 420024653. The reversal of 420024646 is 646420024.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105006160 + ... + 105006163.

It is an arithmetic number, because the mean of its divisors is an integer number (157509243).

Almost surely, 2^420024646 is an apocalyptic number.

420024646 is a deficient number, since it is larger than the sum of its proper divisors (210012326).

420024646 is a wasteful number, since it uses less digits than its factorization.

420024646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210012325.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 420024646 is about 20494.5028239282. The cubic root of 420024646 is about 748.9018869075.

The spelling of 420024646 in words is "four hundred twenty million, twenty-four thousand, six hundred forty-six".