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142318190 = 25710319739
BaseRepresentation
bin10000111101110…
…01101001101110
3100220210111212002
420132321221232
5242413140230
622042212302
73345453560
oct1036715156
9326714762
10142318190
1173375843
123b7b4092
132363c561
1414c89330
15c763545
hex87b9a6e

142318190 has 32 divisors (see below), whose sum is σ = 295626240. Its totient is φ = 48318624.

The previous prime is 142318177. The next prime is 142318199. The reversal of 142318190 is 91813241.

142318190 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1423181902 = 40508934409752200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142318199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2660 + ... + 17079.

It is an arithmetic number, because the mean of its divisors is an integer number (9238320).

Almost surely, 2142318190 is an apocalyptic number.

142318190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142318190 is an abundant number, since it is smaller than the sum of its proper divisors (153308050).

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

142318190 is a wasteful number, since it uses less digits than its factorization.

142318190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19856.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 142318190 is about 11929.7187728798. The cubic root of 142318190 is about 522.0997323668.

The spelling of 142318190 in words is "one hundred forty-two million, three hundred eighteen thousand, one hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 103 206 515 721 1030 1442 3605 7210 19739 39478 98695 138173 197390 276346 690865 1381730 2033117 4066234 10165585 14231819 20331170 28463638 71159095 142318190