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42388424 = 2313419941
BaseRepresentation
bin1010000110110…
…0101111001000
32221202112222122
42201230233020
541322412144
64112310412
71023203261
oct241545710
987675878
1042388424
1121a22061
1212242408
138a21a10
1458b5968
153ac47ee
hex286cbc8

42388424 has 32 divisors (see below), whose sum is σ = 87688440. Its totient is φ = 19084800.

The previous prime is 42388403. The next prime is 42388457. The reversal of 42388424 is 42488324.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4072324 + 38316100 = 2018^2 + 6190^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707 + ... + 9234.

Almost surely, 242388424 is an apocalyptic number.

It is an amenable number.

42388424 is an abundant number, since it is smaller than the sum of its proper divisors (45300016).

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

42388424 is a wasteful number, since it uses less digits than its factorization.

42388424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10001 (or 9997 counting only the distinct ones).

The product of its digits is 49152, while the sum is 35.

The square root of 42388424 is about 6510.6392927269. The cubic root of 42388424 is about 348.6709432276.

The spelling of 42388424 in words is "forty-two million, three hundred eighty-eight thousand, four hundred twenty-four".

Divisors: 1 2 4 8 13 26 41 52 82 104 164 328 533 1066 2132 4264 9941 19882 39764 79528 129233 258466 407581 516932 815162 1033864 1630324 3260648 5298553 10597106 21194212 42388424