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21113042 = 283193659
BaseRepresentation
bin101000010001…
…0100011010010
31110201122122112
41100202203102
520401104132
62032305322
7344313026
oct120424322
943648575
1021113042
1110a105a5
1270a2242
1344b2c32
142b38386
151cc0ab2
hex14228d2

21113042 has 16 divisors (see below), whose sum is σ = 32266080. Its totient is φ = 10359552.

The previous prime is 21113041. The next prime is 21113069. The reversal of 21113042 is 24031112.

It is not an unprimeable number, because it can be changed into a prime (21113041) 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, 31709 + ... + 32367.

It is an arithmetic number, because the mean of its divisors is an integer number (2016630).

Almost surely, 221113042 is an apocalyptic number.

21113042 is a deficient number, since it is larger than the sum of its proper divisors (11153038).

21113042 is a wasteful number, since it uses less digits than its factorization.

21113042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 21113042 is about 4594.8930346636. The cubic root of 21113042 is about 276.3865706107.

Adding to 21113042 its reverse (24031112), we get a palindrome (45144154).

The spelling of 21113042 in words is "twenty-one million, one hundred thirteen thousand, forty-two".

Divisors: 1 2 83 166 193 386 659 1318 16019 32038 54697 109394 127187 254374 10556521 21113042