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42989046 = 2335320297
BaseRepresentation
bin1010001111111…
…1010111110110
32222220001212220
42203333113312
542001122141
64133223210
71031254332
oct243772766
988801786
1042989046
11222a2341
1212491b06
138ba2209
1459d07c2
153b92766
hex28ff5f6

42989046 has 16 divisors (see below), whose sum is σ = 86225904. Its totient is φ = 14288384.

The previous prime is 42989041. The next prime is 42989057. The reversal of 42989046 is 64098924.

It is a junction number, because it is equal to n+sod(n) for n = 42988989 and 42989007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42989041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8031 + ... + 12266.

It is an arithmetic number, because the mean of its divisors is an integer number (5389119).

Almost surely, 242989046 is an apocalyptic number.

42989046 is an abundant number, since it is smaller than the sum of its proper divisors (43236858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42989046 is a wasteful number, since it uses less digits than its factorization.

42989046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20655.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 42989046 is about 6556.6032364327. The cubic root of 42989046 is about 350.3100545026.

The spelling of 42989046 in words is "forty-two million, nine hundred eighty-nine thousand, forty-six".

Divisors: 1 2 3 6 353 706 1059 2118 20297 40594 60891 121782 7164841 14329682 21494523 42989046