420342424 has 8 divisors (see below), whose sum is σ = 788142060. Its totient is φ = 210171208.

The previous prime is 420342413. The next prime is 420342427. The reversal of 420342424 is 424243024.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420342427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26271394 + ... + 26271409.

Almost surely, 2^420342424 is an apocalyptic number.

It is an amenable number.

420342424 is a deficient number, since it is larger than the sum of its proper divisors (367799636).

420342424 is a wasteful number, since it uses less digits than its factorization.

420342424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52542809 (or 52542805 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 420342424 is about 20502.2541199742. The cubic root of 420342424 is about 749.0907048367.

Adding to 420342424 its reverse (424243024), we get a palindrome (844585448).

The spelling of 420342424 in words is "four hundred twenty million, three hundred forty-two thousand, four hundred twenty-four".