420746 has 8 divisors (see below), whose sum is σ = 640224. Its totient is φ = 207340.

The previous prime is 420743. The next prime is 420757. The reversal of 420746 is 647024.

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

It is not an unprimeable number, because it can be changed into a prime (420743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (80028).

2⁴²⁰⁷⁴⁶ is an apocalyptic number.

420746 is a deficient number, since it is larger than the sum of its proper divisors (219478).

420746 is a wasteful number, since it uses less digits than its factorization.

420746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 420746 is about 648.6493659906. The cubic root of 420746 is about 74.9330365260.

The spelling of 420746 in words is "four hundred twenty thousand, seven hundred forty-six".