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142030220 = 22531229081
BaseRepresentation
bin10000111011100…
…11010110001100
3100220020212211112
420131303112030
5242324431340
622032111152
73343144163
oct1035632614
9326225745
10142030220
1173199452
123b6954b8
132356b467
1414c123da
15c708065
hex877358c

142030220 has 24 divisors (see below), whose sum is σ = 307886208. Its totient is φ = 54979200.

The previous prime is 142030211. The next prime is 142030237. The reversal of 142030220 is 22030241.

142030220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 142030195 and 142030204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113921 + ... + 115160.

It is an arithmetic number, because the mean of its divisors is an integer number (12828592).

Almost surely, 2142030220 is an apocalyptic number.

142030220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142030220 is an abundant number, since it is smaller than the sum of its proper divisors (165855988).

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

142030220 is a wasteful number, since it uses less digits than its factorization.

142030220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229121 (or 229119 counting only the distinct ones).

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

The square root of 142030220 is about 11917.6432233894. The cubic root of 142030220 is about 521.7473515955.

Adding to 142030220 its reverse (22030241), we get a palindrome (164060461).

The spelling of 142030220 in words is "one hundred forty-two million, thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 229081 458162 916324 1145405 2290810 4581620 7101511 14203022 28406044 35507555 71015110 142030220