Search a number
-
+
7421044481 = 53231394147
BaseRepresentation
bin1101110100101010…
…00010011100000001
3201011012000010020022
412322111002130001
5110144241410411
63224214423225
7351620560124
oct67225023401
921135003208
107421044481
113168a93614
121531361b15
139136051a6
1450583c3bb
152d6787edb
hex1ba542701

7421044481 has 4 divisors (see below), whose sum is σ = 7422443952. Its totient is φ = 7419645012.

The previous prime is 7421044457. The next prime is 7421044511. The reversal of 7421044481 is 1844401247.

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 7421044481 - 210 = 7421043457 is a prime.

It is a super-2 number, since 2×74210444812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7421044181) 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, 691751 + ... + 702396.

It is an arithmetic number, because the mean of its divisors is an integer number (1855610988).

Almost surely, 27421044481 is an apocalyptic number.

It is an amenable number.

7421044481 is a deficient number, since it is larger than the sum of its proper divisors (1399471).

7421044481 is a wasteful number, since it uses less digits than its factorization.

7421044481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399470.

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 7421044481 is about 86145.4843912320. The cubic root of 7421044481 is about 1950.5406768094.

The spelling of 7421044481 in words is "seven billion, four hundred twenty-one million, forty-four thousand, four hundred eighty-one".

Divisors: 1 5323 1394147 7421044481