421752 has 16 divisors (see below), whose sum is σ = 1054440. Its totient is φ = 140576.

The previous prime is 421741. The next prime is 421783. The reversal of 421752 is 257124.

It is a super-4 number, since 4×421752⁴ (a number of 24 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

421752 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8763 + ... + 8810.

2⁴²¹⁷⁵² is an apocalyptic number.

It is an amenable number.

421752 is an abundant number, since it is smaller than the sum of its proper divisors (632688).

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

421752 is a wasteful number, since it uses less digits than its factorization.

421752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17582 (or 17578 counting only the distinct ones).

The product of its digits is 560, while the sum is 21.

The square root of 421752 is about 649.4243604917. The cubic root of 421752 is about 74.9927104026.

Adding to 421752 its reverse (257124), we get a palindrome (678876).

The spelling of 421752 in words is "four hundred twenty-one thousand, seven hundred fifty-two".