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4120901 = 10140801
BaseRepresentation
bin1111101110000101000101
321202100210222
433232011011
52023332101
6224154125
750012201
oct17560505
97670728
104120901
112365104
121468945
13b13905
14793b01
1556601b
hex3ee145

4120901 has 4 divisors (see below), whose sum is σ = 4161804. Its totient is φ = 4080000.

The previous prime is 4120889. The next prime is 4120903. The reversal of 4120901 is 1090214.

It is a happy number.

It is a Cunningham number, because it is equal to 20302+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3960100 + 160801 = 1990^2 + 401^2 .

It is a cyclic number.

It is not a de Polignac number, because 4120901 - 214 = 4104517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4120901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4120903) 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, 20300 + ... + 20501.

It is an arithmetic number, because the mean of its divisors is an integer number (1040451).

Almost surely, 24120901 is an apocalyptic number.

It is an amenable number.

4120901 is a deficient number, since it is larger than the sum of its proper divisors (40903).

4120901 is a wasteful number, since it uses less digits than its factorization.

4120901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40902.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 4120901 is about 2030.0002463054. Note that the first 3 decimals coincide. The cubic root of 4120901 is about 160.3235769420.

The spelling of 4120901 in words is "four million, one hundred twenty thousand, nine hundred one".

Divisors: 1 101 40801 4120901