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1387122 = 231121017
BaseRepresentation
bin101010010101001110010
32121110202220
411102221302
5323341442
645421510
714535042
oct5225162
92543686
101387122
11868190
1256a896
133974a9
14281722
151c5eec
hex152a72

1387122 has 16 divisors (see below), whose sum is σ = 3026592. Its totient is φ = 420320.

The previous prime is 1387121. The next prime is 1387123. The reversal of 1387122 is 2217831.

It is an interprime number because it is at equal distance from previous prime (1387121) and next prime (1387123).

It is a junction number, because it is equal to n+sod(n) for n = 1387092 and 1387101.

It is not an unprimeable number, because it can be changed into a prime (1387121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10443 + ... + 10574.

It is an arithmetic number, because the mean of its divisors is an integer number (189162).

21387122 is an apocalyptic number.

1387122 is an abundant number, since it is smaller than the sum of its proper divisors (1639470).

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

1387122 is a wasteful number, since it uses less digits than its factorization.

1387122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21033.

The product of its digits is 672, while the sum is 24.

The square root of 1387122 is about 1177.7614359453. The cubic root of 1387122 is about 111.5248257241.

It can be divided in two parts, 138 and 7122, that added together give a triangular number (7260 = T120).

The spelling of 1387122 in words is "one million, three hundred eighty-seven thousand, one hundred twenty-two".

Divisors: 1 2 3 6 11 22 33 66 21017 42034 63051 126102 231187 462374 693561 1387122