4020530 has 8 divisors (see below), whose sum is σ = 7236972. Its totient is φ = 1608208.

The previous prime is 4020529. The next prime is 4020563. The reversal of 4020530 is 350204.

It can be written as a sum of positive squares in 2 ways, for example, as 3948169 + 72361 = 1987^2 + 269^2 .

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

It is a super-2 number, since 2×4020530² = 32329322961800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201017 + ... + 201036.

Almost surely, 2^4020530 is an apocalyptic number.

4020530 is a deficient number, since it is larger than the sum of its proper divisors (3216442).

4020530 is a wasteful number, since it uses less digits than its factorization.

4020530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402060.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 4020530 is about 2005.1259312073. The cubic root of 4020530 is about 159.0112197560.

Adding to 4020530 its reverse (350204), we get a palindrome (4370734).

The spelling of 4020530 in words is "four million, twenty thousand, five hundred thirty".