420102415 has 4 divisors (see below), whose sum is σ = 504122904. Its totient is φ = 336081928.

The previous prime is 420102409. The next prime is 420102427. The reversal of 420102415 is 514201024.

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 420102415 - 2¹³ = 420094223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420102392 and 420102401.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 42010237 + ... + 42010246.

It is an arithmetic number, because the mean of its divisors is an integer number (126030726).

Almost surely, 2^420102415 is an apocalyptic number.

420102415 is a deficient number, since it is larger than the sum of its proper divisors (84020489).

420102415 is an equidigital number, since it uses as much as digits as its factorization.

420102415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84020488.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 420102415 is about 20496.4000497648. The cubic root of 420102415 is about 748.9481046372.

Adding to 420102415 its reverse (514201024), we get a palindrome (934303439).

The spelling of 420102415 in words is "four hundred twenty million, one hundred two thousand, four hundred fifteen".