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42209983 is a prime number
BaseRepresentation
bin1010000100000…
…1001010111111
32221102111012201
42201001022333
541301204413
64104412331
71021531114
oct241011277
987374181
1042209983
112190aa92
12121770a7
13898b72a
14586a90b
153a8b9dd
hex28412bf

42209983 has 2 divisors, whose sum is σ = 42209984. Its totient is φ = 42209982.

The previous prime is 42209977. The next prime is 42210013. The reversal of 42209983 is 38990224.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-42209983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42209183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21104991 + 21104992.

It is an arithmetic number, because the mean of its divisors is an integer number (21104992).

Almost surely, 242209983 is an apocalyptic number.

42209983 is a deficient number, since it is larger than the sum of its proper divisors (1).

42209983 is an equidigital number, since it uses as much as digits as its factorization.

42209983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 42209983 is about 6496.9210400004. The cubic root of 42209983 is about 348.1809926299.

The spelling of 42209983 in words is "forty-two million, two hundred nine thousand, nine hundred eighty-three".