420430043 has 32 divisors (see below), whose sum is σ = 514356480. Its totient is φ = 338688000.

The previous prime is 420430039. The next prime is 420430057. The reversal of 420430043 is 340034024.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 420430043 - 2² = 420430039 is a prime.

It is a super-2 number, since 2×420430043² = 353522842113963698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420429997 and 420430024.

It is not an unprimeable number, because it can be changed into a prime (420430343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 856028 + ... + 856518.

It is an arithmetic number, because the mean of its divisors is an integer number (16073640).

Almost surely, 2^420430043 is an apocalyptic number.

420430043 is a deficient number, since it is larger than the sum of its proper divisors (93926437).

420430043 is a wasteful number, since it uses less digits than its factorization.

420430043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 420430043 is about 20504.3908224556. The cubic root of 420430043 is about 749.1427497211.

Adding to 420430043 its reverse (340034024), we get a palindrome (760464067).

The spelling of 420430043 in words is "four hundred twenty million, four hundred thirty thousand, forty-three".