420387 has 8 divisors (see below), whose sum is σ = 611520. Its totient is φ = 254760.

The previous prime is 420383. The next prime is 420397. The reversal of 420387 is 783024.

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

It is not a de Polignac number, because 420387 - 2² = 420383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6337 + ... + 6402.

It is an arithmetic number, because the mean of its divisors is an integer number (76440).

2⁴²⁰³⁸⁷ is an apocalyptic number.

420387 is a deficient number, since it is larger than the sum of its proper divisors (191133).

420387 is a wasteful number, since it uses less digits than its factorization.

420387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12753.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 420387 is about 648.3725780753. The cubic root of 420387 is about 74.9117183477.

The spelling of 420387 in words is "four hundred twenty thousand, three hundred eighty-seven".