421352105 has 4 divisors (see below), whose sum is σ = 505622532. Its totient is φ = 337081680.

The previous prime is 421352081. The next prime is 421352117. The reversal of 421352105 is 501253124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 167236624 + 254115481 = 12932^2 + 15941^2 .

It is not a de Polignac number, because 421352105 - 2⁸ = 421351849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42135206 + ... + 42135215.

It is an arithmetic number, because the mean of its divisors is an integer number (126405633).

Almost surely, 2^421352105 is an apocalyptic number.

It is an amenable number.

421352105 is a deficient number, since it is larger than the sum of its proper divisors (84270427).

421352105 is an equidigital number, since it uses as much as digits as its factorization.

421352105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84270426.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 421352105 is about 20526.8630092374. The cubic root of 421352105 is about 749.6900081874.

The spelling of 421352105 in words is "four hundred twenty-one million, three hundred fifty-two thousand, one hundred five".