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42436 = 221032
BaseRepresentation
bin1010010111000100
32011012201
422113010
52324221
6524244
7234502
oct122704
964181
1042436
1129979
1220684
1316414
1411672
15c891
hexa5c4

42436 has 9 divisors (see below), whose sum is σ = 74991. Its totient is φ = 21012.

The previous prime is 42433. The next prime is 42437. The reversal of 42436 is 63424.

Multipling 42436 by its product of digits (576), we get a square (24443136 = 49442).

42436 = T205 + T206.

The square root of 42436 is 206.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 361 + ... + 463.

242436 is an apocalyptic number.

42436 is the 206-th square number.

It is an amenable number.

42436 is a deficient number, since it is larger than the sum of its proper divisors (32555).

42436 is a wasteful number, since it uses less digits than its factorization.

42436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 105 counting only the distinct ones).

The product of its digits is 576, while the sum is 19.

The cubic root of 42436 is about 34.8801341773.

The spelling of 42436 in words is "forty-two thousand, four hundred thirty-six".

Divisors: 1 2 4 103 206 412 10609 21218 42436