420086015 has 16 divisors (see below), whose sum is σ = 511680000. Its totient is φ = 331052832.

The previous prime is 420086011. The next prime is 420086021. The reversal of 420086015 is 510680024.

It is a Cunningham number, because it is equal to 20496²-1.

It is a cyclic number.

It is not a de Polignac number, because 420086015 - 2² = 420086011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420086011) 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 15 ways as a sum of consecutive naturals, for example, 100436 + ... + 104534.

It is an arithmetic number, because the mean of its divisors is an integer number (31980000).

Almost surely, 2^420086015 is an apocalyptic number.

420086015 is a deficient number, since it is larger than the sum of its proper divisors (91593985).

420086015 is a wasteful number, since it uses less digits than its factorization.

420086015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 420086015 is about 20495.9999756050. Note that the first 4 decimals coincide. The cubic root of 420086015 is about 748.9383586734.

The spelling of 420086015 in words is "four hundred twenty million, eighty-six thousand, fifteen".