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42990853 = 471914789
BaseRepresentation
bin1010001111111…
…1110100000101
32222220011100211
42203333310011
542001201403
64133235421
71031262523
oct243776405
988804324
1042990853
11222a3734
1212492b71
138ba2c99
1459d1313
153b9306d
hex28ffd05

42990853 has 8 divisors (see below), whose sum is σ = 44144640. Its totient is φ = 41847120.

The previous prime is 42990851. The next prime is 42990859. The reversal of 42990853 is 35809924.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42990853 - 21 = 42990851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42990851) 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, 6583 + ... + 11371.

It is an arithmetic number, because the mean of its divisors is an integer number (5518080).

Almost surely, 242990853 is an apocalyptic number.

It is an amenable number.

42990853 is a deficient number, since it is larger than the sum of its proper divisors (1153787).

42990853 is a wasteful number, since it uses less digits than its factorization.

42990853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 42990853 is about 6556.7410349960. The cubic root of 42990853 is about 350.3149627405.

The spelling of 42990853 in words is "forty-two million, nine hundred ninety thousand, eight hundred fifty-three".

Divisors: 1 47 191 4789 8977 225083 914699 42990853