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4842121 = 23210527
BaseRepresentation
bin10010011110001010001001
3100010000010211
4102132022021
52214421441
6251441121
756104654
oct22361211
910100124
104842121
112807a59
1217561a1
131006c7b
1490089b
15659a81
hex49e289

4842121 has 4 divisors (see below), whose sum is σ = 5052672. Its totient is φ = 4631572.

The previous prime is 4842113. The next prime is 4842139. The reversal of 4842121 is 1212484.

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 4842121 - 23 = 4842113 is a prime.

It is a super-2 number, since 2×48421212 = 46892271557282, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

4842121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4842092 and 4842101.

It is not an unprimeable number, because it can be changed into a prime (4842181) 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, 105241 + ... + 105286.

It is an arithmetic number, because the mean of its divisors is an integer number (1263168).

Almost surely, 24842121 is an apocalyptic number.

It is an amenable number.

4842121 is a deficient number, since it is larger than the sum of its proper divisors (210551).

4842121 is a wasteful number, since it uses less digits than its factorization.

4842121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210550.

The product of its digits is 512, while the sum is 22.

The square root of 4842121 is about 2200.4819926552. The cubic root of 4842121 is about 169.1785165919.

The spelling of 4842121 in words is "four million, eight hundred forty-two thousand, one hundred twenty-one".

Divisors: 1 23 210527 4842121