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42220579 is a prime number
BaseRepresentation
bin1010000100001…
…1110000100011
32221110000202011
42201003300203
541302024304
64104533351
71021604032
oct241036043
987400664
1042220579
1121917a45
1212181257
1389934bb
145870719
153a8ec04
hex2843c23

42220579 has 2 divisors, whose sum is σ = 42220580. Its totient is φ = 42220578.

The previous prime is 42220567. The next prime is 42220583. The reversal of 42220579 is 97502224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42220579 - 217 = 42089507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42220579.

It is not a weakly prime, because it can be changed into another prime (42220559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21110289 + 21110290.

It is an arithmetic number, because the mean of its divisors is an integer number (21110290).

Almost surely, 242220579 is an apocalyptic number.

42220579 is a deficient number, since it is larger than the sum of its proper divisors (1).

42220579 is an equidigital number, since it uses as much as digits as its factorization.

42220579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 42220579 is about 6497.7364520270. The cubic root of 42220579 is about 348.2101248941.

The spelling of 42220579 in words is "forty-two million, two hundred twenty thousand, five hundred seventy-nine".