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4012001 = 7573143
BaseRepresentation
bin1111010011011111100001
321112211102122
433103133201
52011341001
6221554025
746046540
oct17233741
97484378
104012001
1122a0304
121415915
13aa6186
14766157
15543b1b
hex3d37e1

4012001 has 4 divisors (see below), whose sum is σ = 4585152. Its totient is φ = 3438852.

The previous prime is 4011991. The next prime is 4012013. The reversal of 4012001 is 1002104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4012001 - 210 = 4010977 is a prime.

It is a super-3 number, since 3×40120013 (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4012001.

It is not an unprimeable number, because it can be changed into a prime (4012081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286565 + ... + 286578.

It is an arithmetic number, because the mean of its divisors is an integer number (1146288).

Almost surely, 24012001 is an apocalyptic number.

It is an amenable number.

4012001 is a deficient number, since it is larger than the sum of its proper divisors (573151).

4012001 is an equidigital number, since it uses as much as digits as its factorization.

4012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573150.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 4012001 is about 2002.9980029945. The cubic root of 4012001 is about 158.8987000279.

Adding to 4012001 its reverse (1002104), we get a palindrome (5014105).

The spelling of 4012001 in words is "four million, twelve thousand, one".

Divisors: 1 7 573143 4012001