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70127249 = 292418181
BaseRepresentation
bin1000010111000…
…00111010010001
311212221211111112
410023200322101
5120423032444
610543023105
71511033423
oct413407221
9155854445
1070127249
1136648705
121b59aa95
13116b471a
149456813
15625369e
hex42e0e91

70127249 has 4 divisors (see below), whose sum is σ = 72545460. Its totient is φ = 67709040.

The previous prime is 70127237. The next prime is 70127251. The reversal of 70127249 is 94272107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94272107 = 531778719.

It can be written as a sum of positive squares in 2 ways, for example, as 51265600 + 18861649 = 7160^2 + 4343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-70127249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70127219) 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 3 ways as a sum of consecutive naturals, for example, 1209062 + ... + 1209119.

It is an arithmetic number, because the mean of its divisors is an integer number (18136365).

Almost surely, 270127249 is an apocalyptic number.

It is an amenable number.

70127249 is a deficient number, since it is larger than the sum of its proper divisors (2418211).

70127249 is a wasteful number, since it uses less digits than its factorization.

70127249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418210.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 70127249 is about 8374.2013947600. The cubic root of 70127249 is about 412.3781071127.

The spelling of 70127249 in words is "seventy million, one hundred twenty-seven thousand, two hundred forty-nine".

Divisors: 1 29 2418181 70127249