4020402 has 32 divisors (see below), whose sum is σ = 8332992. Its totient is φ = 1292544.

The previous prime is 4020361. The next prime is 4020407. The reversal of 4020402 is 2040204.

It is not an unprimeable number, because it can be changed into a prime (4020407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29278 + ... + 29414.

It is an arithmetic number, because the mean of its divisors is an integer number (260406).

Almost surely, 2^4020402 is an apocalyptic number.

4020402 is an abundant number, since it is smaller than the sum of its proper divisors (4312590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4020402 is a wasteful number, since it uses less digits than its factorization.

4020402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 4020402 is about 2005.0940127585. The cubic root of 4020402 is about 159.0095322793.

Adding to 4020402 its reverse (2040204), we get a palindrome (6060606).

The spelling of 4020402 in words is "four million, twenty thousand, four hundred two".