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1242006524 = 221173386677
BaseRepresentation
bin100101000000111…
…1000001111111100
310012120001110122122
41022001320033330
510020423202044
6323124302112
742530611163
oct11201701774
93176043578
101242006524
11588097980
122a7b41938
1316a411405
14bad463da
1574086dee
hex4a0783fc

1242006524 has 24 divisors (see below), whose sum is σ = 2403590448. Its totient is φ = 556813440.

The previous prime is 1242006511. The next prime is 1242006529. The reversal of 1242006524 is 4256002421.

It is a junction number, because it is equal to n+sod(n) for n = 1242006493 and 1242006502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242006529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190127 + ... + 196550.

It is an arithmetic number, because the mean of its divisors is an integer number (100149602).

Almost surely, 21242006524 is an apocalyptic number.

It is an amenable number.

1242006524 is a deficient number, since it is larger than the sum of its proper divisors (1161583924).

1242006524 is a wasteful number, since it uses less digits than its factorization.

1242006524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386765 (or 386763 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1242006524 is about 35242.1129332508. The cubic root of 1242006524 is about 1074.9162434113.

Adding to 1242006524 its reverse (4256002421), we get a palindrome (5498008945).

The spelling of 1242006524 in words is "one billion, two hundred forty-two million, six thousand, five hundred twenty-four".

Divisors: 1 2 4 11 22 44 73 146 292 803 1606 3212 386677 773354 1546708 4253447 8506894 17013788 28227421 56454842 112909684 310501631 621003262 1242006524