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42807458 = 297263839
BaseRepresentation
bin1010001101001…
…1000010100010
32222112211210102
42203103002202
541424314313
64125302402
71026600041
oct243230242
988484712
1042807458
1122188971
1212404a02
138b3a675
145984558
153b58a58
hex28d30a2

42807458 has 16 divisors (see below), whose sum is σ = 65197440. Its totient is φ = 21077376.

The previous prime is 42807397. The next prime is 42807473. The reversal of 42807458 is 85470824.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50603 + ... + 51441.

It is an arithmetic number, because the mean of its divisors is an integer number (4074840).

Almost surely, 242807458 is an apocalyptic number.

42807458 is a deficient number, since it is larger than the sum of its proper divisors (22389982).

42807458 is a wasteful number, since it uses less digits than its factorization.

42807458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 42807458 is about 6542.7408629717. The cubic root of 42807458 is about 349.8161156520.

The spelling of 42807458 in words is "forty-two million, eight hundred seven thousand, four hundred fifty-eight".

Divisors: 1 2 97 194 263 526 839 1678 25511 51022 81383 162766 220657 441314 21403729 42807458