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40442012 = 2213777731
BaseRepresentation
bin1001101001000…
…1100010011100
32211002200000022
42122101202130
540323121022
64002451312
71000515512
oct232214234
984080008
1040442012
1120912756
1211663b38
1384bcab0
14552a4b2
15383cc42
hex269189c

40442012 has 12 divisors (see below), whose sum is σ = 76217736. Its totient is φ = 18665520.

The previous prime is 40442009. The next prime is 40442057. The reversal of 40442012 is 21024404.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

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, 388814 + ... + 388917.

It is an arithmetic number, because the mean of its divisors is an integer number (6351478).

Almost surely, 240442012 is an apocalyptic number.

It is an amenable number.

40442012 is a deficient number, since it is larger than the sum of its proper divisors (35775724).

40442012 is a wasteful number, since it uses less digits than its factorization.

40442012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777748 (or 777746 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40442012 is about 6359.4034311404. The cubic root of 40442012 is about 343.2502940115.

Adding to 40442012 its reverse (21024404), we get a palindrome (61466416).

The spelling of 40442012 in words is "forty million, four hundred forty-two thousand, twelve".

Divisors: 1 2 4 13 26 52 777731 1555462 3110924 10110503 20221006 40442012