421700019 has 8 divisors (see below), whose sum is σ = 605518032. Its totient is φ = 259507680.

The previous prime is 421700017. The next prime is 421700023. The reversal of 421700019 is 910007124.

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

It is not a de Polignac number, because 421700019 - 2¹ = 421700017 is a prime.

It is a super-2 number, since 2×421700019² = 355661812049200722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421700017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5406372 + ... + 5406449.

It is an arithmetic number, because the mean of its divisors is an integer number (75689754).

Almost surely, 2^421700019 is an apocalyptic number.

421700019 is a deficient number, since it is larger than the sum of its proper divisors (183818013).

421700019 is a wasteful number, since it uses less digits than its factorization.

421700019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812837.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 421700019 is about 20535.3358628487. The cubic root of 421700019 is about 749.8962932161.

The spelling of 421700019 in words is "four hundred twenty-one million, seven hundred thousand, nineteen".