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75142241 = 1573071559
BaseRepresentation
bin1000111101010…
…01010001100001
312020101121202222
410132221101201
5123214022431
611242320425
71601461406
oct436512141
9166347688
1075142241
1139463529
12211b9115
131274c285
149da02ad
1568e457b
hex47a9461

75142241 has 8 divisors (see below), whose sum is σ = 75915840. Its totient is φ = 74372688.

The previous prime is 75142213. The next prime is 75142253. The reversal of 75142241 is 14224157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75142241 - 222 = 70947937 is a prime.

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 75142241.

It is not an unprimeable number, because it can be changed into a prime (75142271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47420 + ... + 48978.

It is an arithmetic number, because the mean of its divisors is an integer number (9489480).

Almost surely, 275142241 is an apocalyptic number.

It is an amenable number.

75142241 is a deficient number, since it is larger than the sum of its proper divisors (773599).

75142241 is a wasteful number, since it uses less digits than its factorization.

75142241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023.

The product of its digits is 2240, while the sum is 26.

The square root of 75142241 is about 8668.4624357495. The cubic root of 75142241 is about 421.9827658558.

Adding to 75142241 its reverse (14224157), we get a palindrome (89366398).

The spelling of 75142241 in words is "seventy-five million, one hundred forty-two thousand, two hundred forty-one".

Divisors: 1 157 307 1559 48199 244763 478613 75142241