421698 has 16 divisors (see below), whose sum is σ = 856800. Its totient is φ = 138336.

The previous prime is 421697. The next prime is 421699. The reversal of 421698 is 896124.

It is an interprime number because it is at equal distance from previous prime (421697) and next prime (421699).

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421698.

It is not an unprimeable number, because it can be changed into a prime (421691) 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, 123 + ... + 926.

It is an arithmetic number, because the mean of its divisors is an integer number (53550).

2⁴²¹⁶⁹⁸ is an apocalyptic number.

421698 is an abundant number, since it is smaller than the sum of its proper divisors (435102).

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

421698 is a wasteful number, since it uses less digits than its factorization.

421698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121.

The product of its digits is 3456, while the sum is 30.

The square root of 421698 is about 649.3827838802. The cubic root of 421698 is about 74.9895096439.

The spelling of 421698 in words is "four hundred twenty-one thousand, six hundred ninety-eight".