420343615 has 32 divisors (see below), whose sum is σ = 545175360. Its totient is φ = 310001664.

The previous prime is 420343613. The next prime is 420343639. The reversal of 420343615 is 516343024.

It is not a de Polignac number, because 420343615 - 2¹ = 420343613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420343613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1027531 + ... + 1027939.

It is an arithmetic number, because the mean of its divisors is an integer number (17036730).

Almost surely, 2^420343615 is an apocalyptic number.

420343615 is a deficient number, since it is larger than the sum of its proper divisors (124831745).

420343615 is a wasteful number, since it uses less digits than its factorization.

420343615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 420343615 is about 20502.2831655404. The cubic root of 420343615 is about 749.0914123283.

Adding to 420343615 its reverse (516343024), we get a palindrome (936686639).

It can be divided in two parts, 420 and 343615, that added together give a triangular number (344035 = T₈₂₉).

The spelling of 420343615 in words is "four hundred twenty million, three hundred forty-three thousand, six hundred fifteen".