421105534 has 8 divisors (see below), whose sum is σ = 632441520. Its totient is φ = 210291696.

The previous prime is 421105513. The next prime is 421105541. The reversal of 421105534 is 435501124.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 421105499 and 421105508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128514 + ... + 131749.

It is an arithmetic number, because the mean of its divisors is an integer number (79055190).

Almost surely, 2^421105534 is an apocalyptic number.

421105534 is a deficient number, since it is larger than the sum of its proper divisors (211335986).

421105534 is a wasteful number, since it uses less digits than its factorization.

421105534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261074.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 421105534 is about 20520.8560737607. The cubic root of 421105534 is about 749.5437426434.

Adding to 421105534 its reverse (435501124), we get a palindrome (856606658).

The spelling of 421105534 in words is "four hundred twenty-one million, one hundred five thousand, five hundred thirty-four".