420850287 has 24 divisors (see below), whose sum is σ = 714172368. Its totient is φ = 235440000.

The previous prime is 420850279. The next prime is 420850333. The reversal of 420850287 is 782058024.

It is a happy number.

It is not a de Polignac number, because 420850287 - 2³ = 420850279 is a prime.

It is a super-2 number, since 2×420850287² = 354229928135964738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420850387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162214 + ... + 164787.

It is an arithmetic number, because the mean of its divisors is an integer number (29757182).

Almost surely, 2^420850287 is an apocalyptic number.

420850287 is a deficient number, since it is larger than the sum of its proper divisors (293322081).

420850287 is a wasteful number, since it uses less digits than its factorization.

420850287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327031 (or 327028 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 420850287 is about 20514.6359217023. The cubic root of 420850287 is about 749.3922703526.

The spelling of 420850287 in words is "four hundred twenty million, eight hundred fifty thousand, two hundred eighty-seven".