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123214015 = 5131313601
BaseRepresentation
bin1110101100000…
…01100010111111
322120211220212001
413112001202333
5223020322030
620120523131
73024205351
oct726014277
9276756761
10123214015
1163607571
12353204a7
131c6b0b02
14125150d1
15ac3ccca
hex75818bf

123214015 has 16 divisors (see below), whose sum is σ = 149710176. Its totient is φ = 97344000.

The previous prime is 123214001. The next prime is 123214019. The reversal of 123214015 is 510412321.

It is not a de Polignac number, because 123214015 - 25 = 123213983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123213983 and 123214001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123214019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204715 + ... + 205315.

It is an arithmetic number, because the mean of its divisors is an integer number (9356886).

Almost surely, 2123214015 is an apocalyptic number.

123214015 is a deficient number, since it is larger than the sum of its proper divisors (26496161).

123214015 is a wasteful number, since it uses less digits than its factorization.

123214015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 123214015 is about 11100.1808543825. The cubic root of 123214015 is about 497.6072544697.

Adding to 123214015 its reverse (510412321), we get a palindrome (633626336).

The spelling of 123214015 in words is "one hundred twenty-three million, two hundred fourteen thousand, fifteen".

Divisors: 1 5 131 313 601 655 1565 3005 41003 78731 188113 205015 393655 940565 24642803 123214015