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BaseRepresentation
bin11010110111011101000001
3111020211000110
4122313131001
53300333011
6410541533
7113602116
oct32673501
914224013
107042881
113a8046a
1224378a9
1315c78b1
14d1490d
15941ba6
hex6b7741

7042881 has 4 divisors (see below), whose sum is σ = 9390512. Its totient is φ = 4695252.

The previous prime is 7042873. The next prime is 7042883. The reversal of 7042881 is 1882407.

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 not a de Polignac number, because 7042881 - 23 = 7042873 is a prime.

It is a super-2 number, since 2×70428812 = 99204345560322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7042883) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1173811 + ... + 1173816.

It is an arithmetic number, because the mean of its divisors is an integer number (2347628).

Almost surely, 27042881 is an apocalyptic number.

It is an amenable number.

7042881 is a deficient number, since it is larger than the sum of its proper divisors (2347631).

7042881 is a wasteful number, since it uses less digits than its factorization.

7042881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347630.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 7042881 is about 2653.8426856165. The cubic root of 7042881 is about 191.6829348090.

The spelling of 7042881 in words is "seven million, forty-two thousand, eight hundred eighty-one".

Divisors: 1 3 2347627 7042881