420505342 has 16 divisors (see below), whose sum is σ = 646462080. Its totient is φ = 205033752.

The previous prime is 420505303. The next prime is 420505363. The reversal of 420505342 is 243505024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55159 + ... + 62317.

It is an arithmetic number, because the mean of its divisors is an integer number (40403880).

Almost surely, 2^420505342 is an apocalyptic number.

420505342 is a deficient number, since it is larger than the sum of its proper divisors (225956738).

420505342 is a wasteful number, since it uses less digits than its factorization.

420505342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7887.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 420505342 is about 20506.2269079419. The cubic root of 420505342 is about 749.1874708612.

The spelling of 420505342 in words is "four hundred twenty million, five hundred five thousand, three hundred forty-two".