420863242 has 8 divisors (see below), whose sum is σ = 632234916. Its totient is φ = 210118272.

The previous prime is 420863153. The next prime is 420863251. The reversal of 420863242 is 242368024.

It can be written as a sum of positive squares in 2 ways, for example, as 388838961 + 32024281 = 19719^2 + 5659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154993 + ... + 157684.

Almost surely, 2^420863242 is an apocalyptic number.

420863242 is a deficient number, since it is larger than the sum of its proper divisors (211371674).

420863242 is a wasteful number, since it uses less digits than its factorization.

420863242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313352.

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 420863242 is about 20514.9516694532. The cubic root of 420863242 is about 749.3999597674.

The spelling of 420863242 in words is "four hundred twenty million, eight hundred sixty-three thousand, two hundred forty-two".