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122520141 = 334537783
BaseRepresentation
bin1110100110110…
…00001001001101
322112112200001000
413103120021031
5222331121031
620054010513
73015255402
oct723301115
9275480030
10122520141
1163183217
1235046a39
131c4ca033
14123b42a9
15ab523e6
hex74d824d

122520141 has 8 divisors (see below), whose sum is σ = 181511360. Its totient is φ = 81680076.

The previous prime is 122520127. The next prime is 122520143. The reversal of 122520141 is 141025221.

122520141 is a `hidden beast` number, since 1 + 2 + 2 + 520 + 141 = 666.

It is not a de Polignac number, because 122520141 - 214 = 122503757 is a prime.

It is a super-2 number, since 2×1225201412 = 30022369901319762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122520143) 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 7 ways as a sum of consecutive naturals, for example, 2268865 + ... + 2268918.

It is an arithmetic number, because the mean of its divisors is an integer number (22688920).

Almost surely, 2122520141 is an apocalyptic number.

It is an amenable number.

122520141 is a deficient number, since it is larger than the sum of its proper divisors (58991219).

122520141 is an equidigital number, since it uses as much as digits as its factorization.

122520141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537792 (or 4537786 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 122520141 is about 11068.8816508263. The cubic root of 122520141 is about 496.6714115027.

Adding to 122520141 its reverse (141025221), we get a palindrome (263545362).

The spelling of 122520141 in words is "one hundred twenty-two million, five hundred twenty thousand, one hundred forty-one".

Divisors: 1 3 9 27 4537783 13613349 40840047 122520141