Search a number
-
+
122977 = 313967
BaseRepresentation
bin11110000001100001
320020200201
4132001201
512413402
62345201
71021351
oct360141
9206621
10122977
1184438
125b201
1343c8a
1432b61
1526687
hex1e061

122977 has 4 divisors (see below), whose sum is σ = 126976. Its totient is φ = 118980.

The previous prime is 122971. The next prime is 123001. The reversal of 122977 is 779221.

It is a happy number.

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 122977 - 27 = 122849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1953 + ... + 2014.

It is an arithmetic number, because the mean of its divisors is an integer number (31744).

2122977 is an apocalyptic number.

It is an amenable number.

122977 is a deficient number, since it is larger than the sum of its proper divisors (3999).

122977 is an equidigital number, since it uses as much as digits as its factorization.

122977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998.

The product of its digits is 1764, while the sum is 28.

The square root of 122977 is about 350.6807665099. The cubic root of 122977 is about 49.7287983192.

The spelling of 122977 in words is "one hundred twenty-two thousand, nine hundred seventy-seven".

Divisors: 1 31 3967 122977