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42793387 = 7134211117
BaseRepresentation
bin1010001100111…
…1100110101011
32222112010111021
42203033212223
541423342022
64125113311
71026511030
oct243174653
988463437
1042793387
112217933a
12123b8837
138b34140
14597d387
153b547c7
hex28cf9ab

42793387 has 16 divisors (see below), whose sum is σ = 52841152. Its totient is φ = 33747840.

The previous prime is 42793367. The next prime is 42793433. The reversal of 42793387 is 78339724.

It is not a de Polignac number, because 42793387 - 219 = 42269099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42793337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37753 + ... + 38869.

It is an arithmetic number, because the mean of its divisors is an integer number (3302572).

Almost surely, 242793387 is an apocalyptic number.

42793387 is a deficient number, since it is larger than the sum of its proper divisors (10047765).

42793387 is a wasteful number, since it uses less digits than its factorization.

42793387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558.

The product of its digits is 254016, while the sum is 43.

The square root of 42793387 is about 6541.6654607218. The cubic root of 42793387 is about 349.7777827522. Note that the first 4 decimals are identical.

The spelling of 42793387 in words is "forty-two million, seven hundred ninety-three thousand, three hundred eighty-seven".

Divisors: 1 7 13 91 421 1117 2947 5473 7819 14521 38311 101647 470257 3291799 6113341 42793387