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4200142 = 22100071
BaseRepresentation
bin10000000001011011001110
321220101111211
4100001123032
52033401032
6230005034
750462212
oct20013316
97811454
104200142
1124096a1
1214a677a
13b409bb
147b4942
1557e747
hex4016ce

4200142 has 4 divisors (see below), whose sum is σ = 6300216. Its totient is φ = 2100070.

The previous prime is 4200137. The next prime is 4200143. The reversal of 4200142 is 2410024.

Adding to 4200142 its reverse (2410024), we get a palindrome (6610166).

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050034 + ... + 1050037.

It is an arithmetic number, because the mean of its divisors is an integer number (1575054).

Almost surely, 24200142 is an apocalyptic number.

4200142 is a deficient number, since it is larger than the sum of its proper divisors (2100074).

4200142 is a wasteful number, since it uses less digits than its factorization.

4200142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100073.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 4200142 is about 2049.4247973517. The cubic root of 4200142 is about 161.3446828904.

The spelling of 4200142 in words is "four million, two hundred thousand, one hundred forty-two".

Divisors: 1 2 2100071 4200142