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122430143 = 1125514363
BaseRepresentation
bin1110100110000…
…10001010111111
322112101002120202
413103002022333
5222320231033
620052034115
73014432123
oct723021277
9275332522
10122430143
1163121640
123500293b
131c498094
141238d583
15ab358e8
hex74c22bf

122430143 has 8 divisors (see below), whose sum is σ = 133643136. Its totient is φ = 111231000.

The previous prime is 122430137. The next prime is 122430157. The reversal of 122430143 is 341034221.

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 122430143 - 210 = 122429119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122430193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25880 + ... + 30242.

It is an arithmetic number, because the mean of its divisors is an integer number (16705392).

Almost surely, 2122430143 is an apocalyptic number.

122430143 is a deficient number, since it is larger than the sum of its proper divisors (11212993).

122430143 is a wasteful number, since it uses less digits than its factorization.

122430143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 122430143 is about 11064.8155429722. The cubic root of 122430143 is about 496.5497705965.

Adding to 122430143 its reverse (341034221), we get a palindrome (463464364).

The spelling of 122430143 in words is "one hundred twenty-two million, four hundred thirty thousand, one hundred forty-three".

Divisors: 1 11 2551 4363 28061 47993 11130013 122430143