420135193 has 8 divisors (see below), whose sum is σ = 425969280. Its totient is φ = 414314160.

The previous prime is 420135167. The next prime is 420135197. The reversal of 420135193 is 391531024.

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

It is a cyclic number.

It is not a de Polignac number, because 420135193 - 2⁹ = 420134681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420135197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73971 + ... + 79447.

It is an arithmetic number, because the mean of its divisors is an integer number (53246160).

Almost surely, 2^420135193 is an apocalyptic number.

It is an amenable number.

420135193 is a deficient number, since it is larger than the sum of its proper divisors (5834087).

420135193 is an equidigital number, since it uses as much as digits as its factorization.

420135193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6527.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 420135193 is about 20497.1996379993. The cubic root of 420135193 is about 748.9675827308.

The spelling of 420135193 in words is "four hundred twenty million, one hundred thirty-five thousand, one hundred ninety-three".