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105754421 = 509207769
BaseRepresentation
bin1100100110110…
…10111100110101
321100222212210102
412103122330311
5204033120141
614254403445
72422616633
oct623327465
9240885712
10105754421
1154771953
122b500585
1318ba9aa6
141008c353
15943e99b
hex64daf35

105754421 has 4 divisors (see below), whose sum is σ = 105962700. Its totient is φ = 105546144.

The previous prime is 105754409. The next prime is 105754427. The reversal of 105754421 is 124457501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65431921 + 40322500 = 8089^2 + 6350^2 .

It is a cyclic number.

It is not a de Polignac number, because 105754421 - 26 = 105754357 is a prime.

It is a super-2 number, since 2×1057544212 = 22367995122090482, 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 (105754427) 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, 103376 + ... + 104393.

It is an arithmetic number, because the mean of its divisors is an integer number (26490675).

Almost surely, 2105754421 is an apocalyptic number.

It is an amenable number.

105754421 is a deficient number, since it is larger than the sum of its proper divisors (208279).

105754421 is an equidigital number, since it uses as much as digits as its factorization.

105754421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208278.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 105754421 is about 10283.6968547308. The cubic root of 105754421 is about 472.8965844470.

The spelling of 105754421 in words is "one hundred five million, seven hundred fifty-four thousand, four hundred twenty-one".

Divisors: 1 509 207769 105754421