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103122020 = 2255156101
BaseRepresentation
bin1100010010110…
…00010001100100
321012001010211002
412021120101210
5202344401040
614122132432
72361344201
oct611302144
9235033732
10103122020
1153234111
122a651118
1318497861
14d9a4ca8
1590bea15
hex6258464

103122020 has 12 divisors (see below), whose sum is σ = 216556284. Its totient is φ = 41248800.

The previous prime is 103121989. The next prime is 103122031. The reversal of 103122020 is 20221301.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11115556 + 92006464 = 3334^2 + 9592^2 .

It is a junction number, because it is equal to n+sod(n) for n = 103121992 and 103122010.

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, 2578031 + ... + 2578070.

It is an arithmetic number, because the mean of its divisors is an integer number (18046357).

Almost surely, 2103122020 is an apocalyptic number.

103122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103122020 is an abundant number, since it is smaller than the sum of its proper divisors (113434264).

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

103122020 is a wasteful number, since it uses less digits than its factorization.

103122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156110 (or 5156108 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 103122020 is about 10154.9012796777. The cubic root of 103122020 is about 468.9398467745.

Adding to 103122020 its reverse (20221301), we get a palindrome (123343321).

The spelling of 103122020 in words is "one hundred three million, one hundred twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 5156101 10312202 20624404 25780505 51561010 103122020