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8142977 = 15153927
BaseRepresentation
bin11111000100000010000001
3120022201001202
4133010002001
54041033402
6450310545
7126133313
oct37040201
916281052
108142977
114661a37
122888455
1318c153b
14111d7b3
15aacb02
hex7c4081

8142977 has 4 divisors (see below), whose sum is σ = 8197056. Its totient is φ = 8088900.

The previous prime is 8142971. The next prime is 8143007. The reversal of 8142977 is 7792418.

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 8142977 - 212 = 8138881 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 8142977.

It is not an unprimeable number, because it can be changed into a prime (8142971) 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, 26813 + ... + 27114.

It is an arithmetic number, because the mean of its divisors is an integer number (2049264).

Almost surely, 28142977 is an apocalyptic number.

It is an amenable number.

8142977 is a deficient number, since it is larger than the sum of its proper divisors (54079).

8142977 is a wasteful number, since it uses less digits than its factorization.

8142977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54078.

The product of its digits is 28224, while the sum is 38.

The square root of 8142977 is about 2853.5901948248. The cubic root of 8142977 is about 201.1844465841.

It can be divided in two parts, 8142 and 977, that added together give a palindrome (9119).

The spelling of 8142977 in words is "eight million, one hundred forty-two thousand, nine hundred seventy-seven".

Divisors: 1 151 53927 8142977