420434342 has 16 divisors (see below), whose sum is σ = 666005760. Its totient is φ = 198652872.

The previous prime is 420434341. The next prime is 420434347. The reversal of 420434342 is 243434024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420434341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51242 + ... + 58877.

It is an arithmetic number, because the mean of its divisors is an integer number (41625360).

Almost surely, 2^420434342 is an apocalyptic number.

420434342 is a deficient number, since it is larger than the sum of its proper divisors (245571418).

420434342 is a wasteful number, since it uses less digits than its factorization.

420434342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110227.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 420434342 is about 20504.4956533927. The cubic root of 420434342 is about 749.1453031017.

Adding to 420434342 its reverse (243434024), we get a palindrome (663868366).

The spelling of 420434342 in words is "four hundred twenty million, four hundred thirty-four thousand, three hundred forty-two".