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42000620 = 2252100031
BaseRepresentation
bin1010000000111…
…0000011101100
32221000212000112
42200032003230
541223004440
64100115152
71016666534
oct240160354
987025015
1042000620
1121787762
1212095ab8
13891734c
1458144c4
153a49965
hex280e0ec

42000620 has 12 divisors (see below), whose sum is σ = 88201344. Its totient is φ = 16800240.

The previous prime is 42000611. The next prime is 42000649. The reversal of 42000620 is 2600024.

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42000595 and 42000604.

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, 1049996 + ... + 1050035.

It is an arithmetic number, because the mean of its divisors is an integer number (7350112).

Almost surely, 242000620 is an apocalyptic number.

It is an amenable number.

42000620 is an abundant number, since it is smaller than the sum of its proper divisors (46200724).

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

42000620 is a wasteful number, since it uses less digits than its factorization.

42000620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100040 (or 2100038 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 42000620 is about 6480.7885322698. The cubic root of 42000620 is about 347.6043749060.

Adding to 42000620 its reverse (2600024), we get a palindrome (44600644).

The spelling of 42000620 in words is "forty-two million, six hundred twenty", and thus it is an aban number.

Divisors: 1 2 4 5 10 20 2100031 4200062 8400124 10500155 21000310 42000620