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1019142 = 237233
BaseRepresentation
bin11111000110100000110
31220210000000
43320310012
5230103032
633502130
711443155
oct3706406
91823000
101019142
11636773
12411946
13298b57
141c759c
15151e7c
hexf8d06

1019142 has 32 divisors (see below), whose sum is σ = 2302560. Its totient is φ = 338256.

The previous prime is 1019129. The next prime is 1019173. The reversal of 1019142 is 2419101.

1019142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4258 + ... + 4490.

It is an arithmetic number, because the mean of its divisors is an integer number (71955).

21019142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1019142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1151280).

1019142 is an abundant number, since it is smaller than the sum of its proper divisors (1283418).

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

1019142 is an frugal number, since it uses more digits than its factorization.

1019142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1019142 is about 1009.5256311754. The cubic root of 1019142 is about 100.6340381270.

The spelling of 1019142 in words is "one million, nineteen thousand, one hundred forty-two".

Divisors: 1 2 3 6 9 18 27 54 81 162 233 243 466 486 699 729 1398 1458 2097 2187 4194 4374 6291 12582 18873 37746 56619 113238 169857 339714 509571 1019142