420430039 has 2 divisors, whose sum is σ = 420430040. Its totient is φ = 420430038.

The previous prime is 420430027. The next prime is 420430057. The reversal of 420430039 is 930034024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420430039 - 2¹³ = 420421847 is a prime.

It is a super-2 number, since 2×420430039² = 353522835387083042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420429995 and 420430022.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420430099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210215019 + 210215020.

It is an arithmetic number, because the mean of its divisors is an integer number (210215020).

Almost surely, 2^420430039 is an apocalyptic number.

420430039 is a deficient number, since it is larger than the sum of its proper divisors (1).

420430039 is an equidigital number, since it uses as much as digits as its factorization.

420430039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 420430039 is about 20504.3907249155. The cubic root of 420430039 is about 749.1427473453.

It can be divided in two parts, 4204 and 30039, that added together give a palindrome (34243).

The spelling of 420430039 in words is "four hundred twenty million, four hundred thirty thousand, thirty-nine".