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127200053 = 532400001
BaseRepresentation
bin1111001010011…
…10101100110101
322212100102200002
413211032230311
5230030400203
620342201045
73103116431
oct745165465
9285312602
10127200053
116588a312
1236723185
1320478206
1412c719c1
15b278d88
hex794eb35

127200053 has 4 divisors (see below), whose sum is σ = 129600108. Its totient is φ = 124800000.

The previous prime is 127200013. The next prime is 127200109. The reversal of 127200053 is 350002721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350002721 = 379459533.

It can be written as a sum of positive squares in 2 ways, for example, as 34597924 + 92602129 = 5882^2 + 9623^2 .

It is a cyclic number.

It is not a de Polignac number, because 127200053 - 222 = 123005749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127199998 and 127200034.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127200013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199948 + ... + 1200053.

It is an arithmetic number, because the mean of its divisors is an integer number (32400027).

Almost surely, 2127200053 is an apocalyptic number.

It is an amenable number.

127200053 is a deficient number, since it is larger than the sum of its proper divisors (2400055).

127200053 is an equidigital number, since it uses as much as digits as its factorization.

127200053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400054.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 127200053 is about 11278.3000935425. The cubic root of 127200053 is about 502.9163606094.

Adding to 127200053 its reverse (350002721), we get a palindrome (477202774).

The spelling of 127200053 in words is "one hundred twenty-seven million, two hundred thousand, fifty-three".

Divisors: 1 53 2400001 127200053