421402 has 8 divisors (see below), whose sum is σ = 645696. Its totient is φ = 206172.

The previous prime is 421397. The next prime is 421409. The reversal of 421402 is 204124.

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 (421409) 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, 2148 + ... + 2335.

It is an arithmetic number, because the mean of its divisors is an integer number (80712).

2⁴²¹⁴⁰² is an apocalyptic number.

421402 is a deficient number, since it is larger than the sum of its proper divisors (224294).

421402 is a wasteful number, since it uses less digits than its factorization.

421402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4532.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 421402 is about 649.1548351511. The cubic root of 421402 is about 74.9719598884.

Adding to 421402 its reverse (204124), we get a palindrome (625526).

It can be divided in two parts, 42 and 1402, that added together give a square (1444 = 38²).

The spelling of 421402 in words is "four hundred twenty-one thousand, four hundred two", and thus it is an iban number.