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142914140 = 2257145707
BaseRepresentation
bin10001000010010…
…11001001011100
3100221220210100022
420201023021130
5243041223030
622103051312
73353515205
oct1041131134
9327823308
10142914140
1173742566
123ba40b38
13237ba8a5
1414da25ac
15c82ede5
hex884b25c

142914140 has 12 divisors (see below), whose sum is σ = 300119736. Its totient is φ = 57165648.

The previous prime is 142914139. The next prime is 142914199. The reversal of 142914140 is 41419241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3572834 + ... + 3572873.

It is an arithmetic number, because the mean of its divisors is an integer number (25009978).

Almost surely, 2142914140 is an apocalyptic number.

142914140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142914140 is an abundant number, since it is smaller than the sum of its proper divisors (157205596).

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

142914140 is a wasteful number, since it uses less digits than its factorization.

142914140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7145716 (or 7145714 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 142914140 is about 11954.6702171160. The cubic root of 142914140 is about 522.8274726541.

The spelling of 142914140 in words is "one hundred forty-two million, nine hundred fourteen thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 7145707 14291414 28582828 35728535 71457070 142914140