4001258 has 4 divisors (see below), whose sum is σ = 6001890. Its totient is φ = 2000628.

The previous prime is 4001243. The next prime is 4001269. The reversal of 4001258 is 8521004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2601769 + 1399489 = 1613^2 + 1183^2 .

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1000313 + ... + 1000316.

Almost surely, 2^4001258 is an apocalyptic number.

4001258 is a deficient number, since it is larger than the sum of its proper divisors (2000632).

4001258 is a wasteful number, since it uses less digits than its factorization.

4001258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000631.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 4001258 is about 2000.3144752763. The cubic root of 4001258 is about 158.7567447069.

The spelling of 4001258 in words is "four million, one thousand, two hundred fifty-eight".