420343011 has 24 divisors (see below), whose sum is σ = 665286960. Its totient is φ = 253627200.

The previous prime is 420342971. The next prime is 420343019. The reversal of 420343011 is 110343024.

It is a de Polignac number, because none of the positive numbers 2^k-420343011 is a prime.

It is a super-2 number, since 2×420343011² = 353376493793092242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420343019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13401 + ... + 31941.

It is an arithmetic number, because the mean of its divisors is an integer number (27720290).

Almost surely, 2^420343011 is an apocalyptic number.

420343011 is a deficient number, since it is larger than the sum of its proper divisors (244943949).

420343011 is a wasteful number, since it uses less digits than its factorization.

420343011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18787 (or 18784 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 420343011 is about 20502.2684354683. The cubic root of 420343011 is about 749.0910535334.

Adding to 420343011 its reverse (110343024), we get a palindrome (530686035).

The spelling of 420343011 in words is "four hundred twenty million, three hundred forty-three thousand, eleven".