420140268 has 18 divisors (see below), whose sum is σ = 1062021324. Its totient is φ = 140046744.

The previous prime is 420140219. The next prime is 420140297. The reversal of 420140268 is 862041024.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-4 number, since 4×420140268⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5835246 + ... + 5835317.

Almost surely, 2^420140268 is an apocalyptic number.

It is an amenable number.

420140268 is an abundant number, since it is smaller than the sum of its proper divisors (641881056).

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

420140268 is a wasteful number, since it uses less digits than its factorization.

420140268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11670573 (or 11670568 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 420140268 is about 20497.3234350244. The cubic root of 420140268 is about 748.9705984229.

The spelling of 420140268 in words is "four hundred twenty million, one hundred forty thousand, two hundred sixty-eight".