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7000042 = 27271429
BaseRepresentation
bin11010101100111111101010
3111011122020211
4122230333222
53243000132
6410011334
7113333200
oct32547752
914148224
107000042
113a51265
122416b4a
1315b124a
14d03070
15934147
hex6acfea

7000042 has 12 divisors (see below), whose sum is σ = 12214530. Its totient is φ = 2999976.

The previous prime is 7000033. The next prime is 7000057. The reversal of 7000042 is 2400007.

It can be written as a sum of positive squares in only one way, i.e., 6964321 + 35721 = 2639^2 + 189^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6999986 and 7000031.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35617 + ... + 35812.

Almost surely, 27000042 is an apocalyptic number.

7000042 is a deficient number, since it is larger than the sum of its proper divisors (5214488).

7000042 is a wasteful number, since it uses less digits than its factorization.

7000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71445 (or 71438 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 7000042 is about 2645.7592483066. The cubic root of 7000042 is about 191.2935008627.

Adding to 7000042 its reverse (2400007), we get a palindrome (9400049).

The spelling of 7000042 in words is "seven million, forty-two", and thus it is an aban number and an uban number.

Divisors: 1 2 7 14 49 98 71429 142858 500003 1000006 3500021 7000042