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381142 = 21491279
BaseRepresentation
bin1011101000011010110
3201100211101
41131003112
544144032
612100314
73145126
oct1350326
9640741
10381142
112403a3
1216469a
13104638
149cc86
1577de7
hex5d0d6

381142 has 8 divisors (see below), whose sum is σ = 576000. Its totient is φ = 189144.

The previous prime is 381103. The next prime is 381167. The reversal of 381142 is 241183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342 + ... + 937.

It is an arithmetic number, because the mean of its divisors is an integer number (72000).

2381142 is an apocalyptic number.

381142 is a deficient number, since it is larger than the sum of its proper divisors (194858).

381142 is a wasteful number, since it uses less digits than its factorization.

381142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430.

The product of its digits is 192, while the sum is 19.

The square root of 381142 is about 617.3669897233. The cubic root of 381142 is about 72.5040505070.

The spelling of 381142 in words is "three hundred eighty-one thousand, one hundred forty-two".

Divisors: 1 2 149 298 1279 2558 190571 381142