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122987073 = 3113726881
BaseRepresentation
bin1110101010010…
…10001001000001
322120102101112210
413111022021001
5222441041243
620112012333
73022241616
oct725121101
9276371483
10122987073
1163472010
12352310a9
131c631721
141249650d
15abe5933
hex754a241

122987073 has 8 divisors (see below), whose sum is σ = 178890336. Its totient is φ = 74537600.

The previous prime is 122987071. The next prime is 122987077. The reversal of 122987073 is 370789221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122987073 - 21 = 122987071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122987071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863408 + ... + 1863473.

It is an arithmetic number, because the mean of its divisors is an integer number (22361292).

Almost surely, 2122987073 is an apocalyptic number.

It is an amenable number.

122987073 is a deficient number, since it is larger than the sum of its proper divisors (55903263).

122987073 is a wasteful number, since it uses less digits than its factorization.

122987073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726895.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 122987073 is about 11089.9536969277. The cubic root of 122987073 is about 497.3015603791.

The spelling of 122987073 in words is "one hundred twenty-two million, nine hundred eighty-seven thousand, seventy-three".

Divisors: 1 3 11 33 3726881 11180643 40995691 122987073