Search a number
-
+
124897109 = 314028939
BaseRepresentation
bin1110111000111…
…00011101010101
322201000102121212
413130130131111
5223433201414
620220551205
73044415341
oct734343525
9281012555
10124897109
1164557057
12359b2505
131cb4cc1c
1412832621
15ae7183e
hex771c755

124897109 has 4 divisors (see below), whose sum is σ = 128926080. Its totient is φ = 120868140.

The previous prime is 124897099. The next prime is 124897133. The reversal of 124897109 is 901798421.

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 124897109 - 24 = 124897093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124897139) 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, 2014439 + ... + 2014500.

It is an arithmetic number, because the mean of its divisors is an integer number (32231520).

Almost surely, 2124897109 is an apocalyptic number.

It is an amenable number.

124897109 is a deficient number, since it is larger than the sum of its proper divisors (4028971).

124897109 is an equidigital number, since it uses as much as digits as its factorization.

124897109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028970.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 124897109 is about 11175.7375148131. The cubic root of 124897109 is about 499.8627743417.

The spelling of 124897109 in words is "one hundred twenty-four million, eight hundred ninety-seven thousand, one hundred nine".

Divisors: 1 31 4028939 124897109