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141010021 = 157898153
BaseRepresentation
bin10000110011110…
…10010001100101
3100211100001101101
420121322101211
5242044310041
621554200101
73331364635
oct1031722145
9324301341
10141010021
1172661a09
123b283031
13232a1ca9
1414a286c5
15c5a5b31
hex867a465

141010021 has 4 divisors (see below), whose sum is σ = 141908332. Its totient is φ = 140111712.

The previous prime is 141010003. The next prime is 141010031. The reversal of 141010021 is 120010141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120010141 = 1031165147.

It can be written as a sum of positive squares in 2 ways, for example, as 30129121 + 110880900 = 5489^2 + 10530^2 .

It is a cyclic number.

It is not a de Polignac number, because 141010021 - 219 = 140485733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141010031) 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 3 ways as a sum of consecutive naturals, for example, 448920 + ... + 449233.

It is an arithmetic number, because the mean of its divisors is an integer number (35477083).

Almost surely, 2141010021 is an apocalyptic number.

It is an amenable number.

141010021 is a deficient number, since it is larger than the sum of its proper divisors (898311).

141010021 is an equidigital number, since it uses as much as digits as its factorization.

141010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898310.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 141010021 is about 11874.7640397610. The cubic root of 141010021 is about 520.4951164445.

Adding to 141010021 its reverse (120010141), we get a palindrome (261020162).

The spelling of 141010021 in words is "one hundred forty-one million, ten thousand, twenty-one".

Divisors: 1 157 898153 141010021