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42049580 = 2252102479
BaseRepresentation
bin1010000001101…
…0000000101100
32221010100011212
42200122000230
541231041310
64101133552
71020262346
oct240320054
987110155
1042049580
1121810521
12120ba2b8
138933711
145828296
153a59205
hex281a02c

42049580 has 12 divisors (see below), whose sum is σ = 88304160. Its totient is φ = 16819824.

The previous prime is 42049577. The next prime is 42049591. The reversal of 42049580 is 8594024.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051220 + ... + 1051259.

It is an arithmetic number, because the mean of its divisors is an integer number (7358680).

Almost surely, 242049580 is an apocalyptic number.

It is an amenable number.

42049580 is an abundant number, since it is smaller than the sum of its proper divisors (46254580).

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

42049580 is a wasteful number, since it uses less digits than its factorization.

42049580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102488 (or 2102486 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 42049580 is about 6484.5647502357. The cubic root of 42049580 is about 347.7393895922.

The spelling of 42049580 in words is "forty-two million, forty-nine thousand, five hundred eighty".

Divisors: 1 2 4 5 10 20 2102479 4204958 8409916 10512395 21024790 42049580