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142430502 = 23191312409
BaseRepresentation
bin10000111110101…
…01000100100110
3100221000012220210
420133111010212
5242430234002
622044440250
73346432164
oct1037250446
9327005823
10142430502
1173442165
123b849086
132367b706
1414cb8234
15c78696c
hex87d5126

142430502 has 16 divisors (see below), whose sum is σ = 285032880. Its totient is φ = 47448192.

The previous prime is 142430489. The next prime is 142430507. The reversal of 142430502 is 205034241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142430507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5274 + ... + 17682.

It is an arithmetic number, because the mean of its divisors is an integer number (17814555).

Almost surely, 2142430502 is an apocalyptic number.

142430502 is an abundant number, since it is smaller than the sum of its proper divisors (142602378).

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

142430502 is a wasteful number, since it uses less digits than its factorization.

142430502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14327.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 142430502 is about 11934.4250804134. The cubic root of 142430502 is about 522.2370365464.

Adding to 142430502 its reverse (205034241), we get a palindrome (347464743).

The spelling of 142430502 in words is "one hundred forty-two million, four hundred thirty thousand, five hundred two".

Divisors: 1 2 3 6 1913 3826 5739 11478 12409 24818 37227 74454 23738417 47476834 71215251 142430502