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1212430130 = 25121243013
BaseRepresentation
bin100100001000100…
…0011011100110010
310010111101211110122
41020101003130302
54440340231010
6320150330242
742021325502
oct11021033462
93114354418
101212430130
1157242677a
1229a059982
131642571a2
14b7047a02
1571693855
hex48443732

1212430130 has 8 divisors (see below), whose sum is σ = 2182374252. Its totient is φ = 484972048.

The previous prime is 1212430103. The next prime is 1212430183. The reversal of 1212430130 is 310342121.

It can be written as a sum of positive squares in 2 ways, for example, as 1132524409 + 79905721 = 33653^2 + 8939^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1212430099 and 1212430108.

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, 60621497 + ... + 60621516.

Almost surely, 21212430130 is an apocalyptic number.

1212430130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212430130 is a deficient number, since it is larger than the sum of its proper divisors (969944122).

1212430130 is a wasteful number, since it uses less digits than its factorization.

1212430130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121243020.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1212430130 is about 34819.9674037757. The cubic root of 1212430130 is about 1066.3151349211.

Adding to 1212430130 its reverse (310342121), we get a palindrome (1522772251).

The spelling of 1212430130 in words is "one billion, two hundred twelve million, four hundred thirty thousand, one hundred thirty".

Divisors: 1 2 5 10 121243013 242486026 606215065 1212430130