420430940 has 24 divisors (see below), whose sum is σ = 885145632. Its totient is φ = 167745600.

The previous prime is 420430931. The next prime is 420430979. The reversal of 420430940 is 49034024.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18536 + ... + 34415.

It is an arithmetic number, because the mean of its divisors is an integer number (36881068).

Almost surely, 2^420430940 is an apocalyptic number.

It is an amenable number.

420430940 is an abundant number, since it is smaller than the sum of its proper divisors (464714692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420430940 is a wasteful number, since it uses less digits than its factorization.

420430940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53357 (or 53355 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 420430940 is about 20504.4126958077. The cubic root of 420430940 is about 749.1432824935.

Adding to 420430940 its reverse (49034024), we get a palindrome (469464964).

The spelling of 420430940 in words is "four hundred twenty million, four hundred thirty thousand, nine hundred forty".