421535434 has 16 divisors (see below), whose sum is σ = 678672648. Its totient is φ = 195651072.

The previous prime is 421535419. The next prime is 421535461. The reversal of 421535434 is 434535124.

It can be written as a sum of positive squares in 4 ways, for example, as 370370025 + 51165409 = 19245^2 + 7153^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421535396 and 421535405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82437 + ... + 87400.

Almost surely, 2^421535434 is an apocalyptic number.

421535434 is a deficient number, since it is larger than the sum of its proper divisors (257137214).

421535434 is a wasteful number, since it uses less digits than its factorization.

421535434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169929.

The product of its digits is 28800, while the sum is 31.

The square root of 421535434 is about 20531.3281109625. The cubic root of 421535434 is about 749.7987216913.

The spelling of 421535434 in words is "four hundred twenty-one million, five hundred thirty-five thousand, four hundred thirty-four".