4020435 has 28 divisors (see below), whose sum is σ = 7240032. Its totient is φ = 2142288.

The previous prime is 4020433. The next prime is 4020461. The reversal of 4020435 is 5340204.

It is a happy number.

It is not a de Polignac number, because 4020435 - 2¹ = 4020433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4020431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3094 + ... + 4196.

Almost surely, 2^4020435 is an apocalyptic number.

4020435 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4020435 is a deficient number, since it is larger than the sum of its proper divisors (3219597).

4020435 is an equidigital number, since it uses as much as digits as its factorization.

4020435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1111 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4020435 is about 2005.1022417822. The cubic root of 4020435 is about 159.0099673353.

Adding to 4020435 its reverse (5340204), we get a palindrome (9360639).

The spelling of 4020435 in words is "four million, twenty thousand, four hundred thirty-five".