420102519 has 4 divisors (see below), whose sum is σ = 560136696. Its totient is φ = 280068344.

The previous prime is 420102511. The next prime is 420102533. The reversal of 420102519 is 915201024.

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

It is a cyclic number.

It is not a de Polignac number, because 420102519 - 2³ = 420102511 is a prime.

It is a super-3 number, since 3×420102519³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420102511) 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 3 ways as a sum of consecutive naturals, for example, 70017084 + ... + 70017089.

It is an arithmetic number, because the mean of its divisors is an integer number (140034174).

Almost surely, 2^420102519 is an apocalyptic number.

420102519 is a deficient number, since it is larger than the sum of its proper divisors (140034177).

420102519 is a wasteful number, since it uses less digits than its factorization.

420102519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140034176.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 420102519 is about 20496.4025867956. The cubic root of 420102519 is about 748.9481664400.

The spelling of 420102519 in words is "four hundred twenty million, one hundred two thousand, five hundred nineteen".