4020735 has 8 divisors (see below), whose sum is σ = 6433200. Its totient is φ = 2144384.

The previous prime is 4020733. The next prime is 4020749. The reversal of 4020735 is 5370204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4020735 - 2¹ = 4020733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134010 + ... + 134039.

It is an arithmetic number, because the mean of its divisors is an integer number (804150).

Almost surely, 2^4020735 is an apocalyptic number.

4020735 is a deficient number, since it is larger than the sum of its proper divisors (2412465).

4020735 is a wasteful number, since it uses less digits than its factorization.

4020735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268057.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 4020735 is about 2005.1770495395. The cubic root of 4020735 is about 159.0139222808.

Adding to 4020735 its reverse (5370204), we get a palindrome (9390939).

The spelling of 4020735 in words is "four million, twenty thousand, seven hundred thirty-five".