4020258 has 16 divisors (see below), whose sum is σ = 8771616. Its totient is φ = 1218240.

The previous prime is 4020257. The next prime is 4020277. The reversal of 4020258 is 8520204.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4020257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30391 + ... + 30522.

It is an arithmetic number, because the mean of its divisors is an integer number (548226).

Almost surely, 2^4020258 is an apocalyptic number.

4020258 is an abundant number, since it is smaller than the sum of its proper divisors (4751358).

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

4020258 is a wasteful number, since it uses less digits than its factorization.

4020258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60929.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 4020258 is about 2005.0581038962. The cubic root of 4020258 is about 159.0076338252.

It can be divided in two parts, 4020 and 258, that added together give a triangular number (4278 = T₉₂).

The spelling of 4020258 in words is "four million, twenty thousand, two hundred fifty-eight".