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1290141 = 3371673
BaseRepresentation
bin100111010111110011101
32102112202000
410322332131
5312241031
643352513
713652226
oct4727635
92375660
101290141
11801336
12522739
133622c8
1425824d
151a73e6
hex13af9d

1290141 has 16 divisors (see below), whose sum is σ = 1941120. Its totient is φ = 846720.

The previous prime is 1290131. The next prime is 1290143. The reversal of 1290141 is 1410921.

It is not a de Polignac number, because 1290141 - 25 = 1290109 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290143) 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, 1581 + ... + 2253.

It is an arithmetic number, because the mean of its divisors is an integer number (121320).

21290141 is an apocalyptic number.

It is an amenable number.

1290141 is a deficient number, since it is larger than the sum of its proper divisors (650979).

1290141 is an equidigital number, since it uses as much as digits as its factorization.

1290141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753 (or 747 counting only the distinct ones).

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

The square root of 1290141 is about 1135.8437392529. The cubic root of 1290141 is about 108.8626893713.

It can be divided in two parts, 1290 and 141, that added together give a triangular number (1431 = T53).

The spelling of 1290141 in words is "one million, two hundred ninety thousand, one hundred forty-one".

Divisors: 1 3 9 27 71 213 639 673 1917 2019 6057 18171 47783 143349 430047 1290141