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1213404130 = 25121340413
BaseRepresentation
bin100100001010011…
…0001001111100010
310010120020022112201
41020110301033202
54441112413010
6320223243414
742032523241
oct11024611742
93116208481
101213404130
11572a31534
1229a44956a
13164508613
14b721c958
15717d723a
hex485313e2

1213404130 has 8 divisors (see below), whose sum is σ = 2184127452. Its totient is φ = 485361648.

The previous prime is 1213404113. The next prime is 1213404133. The reversal of 1213404130 is 314043121.

It can be written as a sum of positive squares in 2 ways, for example, as 1173953169 + 39450961 = 34263^2 + 6281^2 .

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 = 1213404098 and 1213404107.

It is not an unprimeable number, because it can be changed into a prime (1213404133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60670197 + ... + 60670216.

Almost surely, 21213404130 is an apocalyptic number.

1213404130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213404130 is a deficient number, since it is larger than the sum of its proper divisors (970723322).

1213404130 is a wasteful number, since it uses less digits than its factorization.

1213404130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121340420.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1213404130 is about 34833.9508238730. The cubic root of 1213404130 is about 1066.6005982299.

Adding to 1213404130 its reverse (314043121), we get a palindrome (1527447251).

The spelling of 1213404130 in words is "one billion, two hundred thirteen million, four hundred four thousand, one hundred thirty".

Divisors: 1 2 5 10 121340413 242680826 606702065 1213404130