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42007843 is a prime number
BaseRepresentation
bin1010000000111…
…1110100100011
32221001012221001
42200033310203
541223222333
64100212431
71020026563
oct240176443
987035831
1042007843
1121792129
121209a117
13891a717
145816da3
153a4bb7d
hex280fd23

42007843 has 2 divisors, whose sum is σ = 42007844. Its totient is φ = 42007842.

The previous prime is 42007831. The next prime is 42007859. The reversal of 42007843 is 34870024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42007843 - 213 = 41999651 is a prime.

It is not a weakly prime, because it can be changed into another prime (42007813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21003921 + 21003922.

It is an arithmetic number, because the mean of its divisors is an integer number (21003922).

Almost surely, 242007843 is an apocalyptic number.

42007843 is a deficient number, since it is larger than the sum of its proper divisors (1).

42007843 is an equidigital number, since it uses as much as digits as its factorization.

42007843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 42007843 is about 6481.3457707485. The cubic root of 42007843 is about 347.6243000285.

Adding to 42007843 its reverse (34870024), we get a palindrome (76877867).

The spelling of 42007843 in words is "forty-two million, seven thousand, eight hundred forty-three".