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122030479 = 235305673
BaseRepresentation
bin1110100011000…
…00100110001111
322111121210100101
413101200212033
5222214433404
620035311531
73011145664
oct721404617
9274553311
10122030479
116297933a
1234a4b5a7
131c3881ac
14122c7a6b
15aaa72a4
hex746098f

122030479 has 4 divisors (see below), whose sum is σ = 127336176. Its totient is φ = 116724784.

The previous prime is 122030459. The next prime is 122030497. The reversal of 122030479 is 974030221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-122030479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122030459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2652814 + ... + 2652859.

It is an arithmetic number, because the mean of its divisors is an integer number (31834044).

Almost surely, 2122030479 is an apocalyptic number.

122030479 is a deficient number, since it is larger than the sum of its proper divisors (5305697).

122030479 is an equidigital number, since it uses as much as digits as its factorization.

122030479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305696.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 122030479 is about 11046.7406505267. The cubic root of 122030479 is about 496.0088651186.

The spelling of 122030479 in words is "one hundred twenty-two million, thirty thousand, four hundred seventy-nine".

Divisors: 1 23 5305673 122030479