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101290 = 2571447
BaseRepresentation
bin11000101110101010
312010221111
4120232222
511220130
62100534
7601210
oct305652
9163844
10101290
116a112
124a74a
1337147
1428cb0
152002a
hex18baa

101290 has 16 divisors (see below), whose sum is σ = 208512. Its totient is φ = 34704.

The previous prime is 101287. The next prime is 101293. The reversal of 101290 is 92101.

It is an interprime number because it is at equal distance from previous prime (101287) and next prime (101293).

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

It is a self number, because there is not a number n which added to its sum of digits gives 101290.

It is not an unprimeable number, because it can be changed into a prime (101293) 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, 654 + ... + 793.

It is an arithmetic number, because the mean of its divisors is an integer number (13032).

2101290 is an apocalyptic number.

101290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101290 is an abundant number, since it is smaller than the sum of its proper divisors (107222).

It is a weird number, because it is abundant, but not a pseudoperfect number.

101290 is a wasteful number, since it uses less digits than its factorization.

101290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 101290 is about 318.2608992635. The cubic root of 101290 is about 46.6146245244.

Adding to 101290 its reverse (92101), we get a palindrome (193391).

The spelling of 101290 in words is "one hundred one thousand, two hundred ninety".

Divisors: 1 2 5 7 10 14 35 70 1447 2894 7235 10129 14470 20258 50645 101290