100420519 has 2 divisors, whose sum is σ = 100420520. Its totient is φ = 100420518.

The previous prime is 100420499. The next prime is 100420549. The reversal of 100420519 is 915024001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100420519 - 2¹³ = 100412327 is a prime.

It is a super-2 number, since 2×100420519² = 20168561272458722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100420519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100420549) by changing a digit.

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 as a sum of consecutive naturals, namely, 50210259 + 50210260.

It is an arithmetic number, because the mean of its divisors is an integer number (50210260).

Almost surely, 2^100420519 is an apocalyptic number.

100420519 is a deficient number, since it is larger than the sum of its proper divisors (1).

100420519 is an equidigital number, since it uses as much as digits as its factorization.

100420519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 100420519 is about 10021.0038918264. The cubic root of 100420519 is about 464.8085989163.

The spelling of 100420519 in words is "one hundred million, four hundred twenty thousand, five hundred nineteen".