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142021348 = 2275072191
BaseRepresentation
bin10000111011100…
…01001011100100
3100220020102122221
420131301023210
5242324140343
622032002124
73343106260
oct1035611344
9326212587
10142021348
1173192817
123b690344
1323567401
1414c0d0a0
15c7055ed
hex87712e4

142021348 has 12 divisors (see below), whose sum is σ = 284042752. Its totient is φ = 60866280.

The previous prime is 142021337. The next prime is 142021351. The reversal of 142021348 is 843120241.

142021348 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2536068 + ... + 2536123.

Almost surely, 2142021348 is an apocalyptic number.

It is an amenable number.

142021348 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

142021348 is a wasteful number, since it uses less digits than its factorization.

142021348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5072202 (or 5072200 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 142021348 is about 11917.2709963313. The cubic root of 142021348 is about 521.7364876191.

Adding to 142021348 its reverse (843120241), we get a palindrome (985141589).

The spelling of 142021348 in words is "one hundred forty-two million, twenty-one thousand, three hundred forty-eight".

Divisors: 1 2 4 7 14 28 5072191 10144382 20288764 35505337 71010674 142021348