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1289242 = 22328027
BaseRepresentation
bin100111010110000011010
32102111111201
410322300122
5312223432
643344414
713646503
oct4726032
92374451
101289242
11800699
1252210a
13361a86
14257baa
151a6ee7
hex13ac1a

1289242 has 8 divisors (see below), whose sum is σ = 2018016. Its totient is φ = 616572.

The previous prime is 1289237. The next prime is 1289261. The reversal of 1289242 is 2429821.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1289242.

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, 13968 + ... + 14059.

It is an arithmetic number, because the mean of its divisors is an integer number (252252).

21289242 is an apocalyptic number.

1289242 is a deficient number, since it is larger than the sum of its proper divisors (728774).

1289242 is a wasteful number, since it uses less digits than its factorization.

1289242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28052.

The product of its digits is 2304, while the sum is 28.

The square root of 1289242 is about 1135.4479292332. The cubic root of 1289242 is about 108.8373974850.

The spelling of 1289242 in words is "one million, two hundred eighty-nine thousand, two hundred forty-two".

Divisors: 1 2 23 46 28027 56054 644621 1289242