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103130420 = 2256776963
BaseRepresentation
bin1100010010110…
…10010100110100
321012001120100012
412021122110310
5202400133140
614122235352
72361410531
oct611322464
9235046305
10103130420
115323a458
122a655b58
131849b623
14d9a7d88
1590c2265
hex625a534

103130420 has 24 divisors (see below), whose sum is σ = 219809184. Its totient is φ = 40635936.

The previous prime is 103130389. The next prime is 103130437. The reversal of 103130420 is 24031301.

It is a junction number, because it is equal to n+sod(n) for n = 103130395 and 103130404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37142 + ... + 39821.

It is an arithmetic number, because the mean of its divisors is an integer number (9158716).

Almost surely, 2103130420 is an apocalyptic number.

103130420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103130420 is an abundant number, since it is smaller than the sum of its proper divisors (116678764).

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

103130420 is a wasteful number, since it uses less digits than its factorization.

103130420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77039 (or 77037 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 103130420 is about 10155.3148646411. The cubic root of 103130420 is about 468.9525792241.

Adding to 103130420 its reverse (24031301), we get a palindrome (127161721).

The spelling of 103130420 in words is "one hundred three million, one hundred thirty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 67 134 268 335 670 1340 76963 153926 307852 384815 769630 1539260 5156521 10313042 20626084 25782605 51565210 103130420