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1161423120 = 2435111343787
BaseRepresentation
bin100010100111001…
…1110100100010000
32222221102102000010
41011032132210100
54334311014440
6311125154520
740531635144
oct10516364420
92887372003
101161423120
11546658420
12284b5ba40
13156808620
14b036b224
156be6a580
hex4539e910

1161423120 has 320 divisors, whose sum is σ = 4333722624. Its totient is φ = 253532160.

The previous prime is 1161423097. The next prime is 1161423143. The reversal of 1161423120 is 213241611.

It is an interprime number because it is at equal distance from previous prime (1161423097) and next prime (1161423143).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1475367 + ... + 1476153.

Almost surely, 21161423120 is an apocalyptic number.

1161423120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161423120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2166861312).

1161423120 is an abundant number, since it is smaller than the sum of its proper divisors (3172299504).

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

1161423120 is a wasteful number, since it uses less digits than its factorization.

1161423120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1161423120 is about 34079.6584489927. The cubic root of 1161423120 is about 1051.1470820045.

Adding to 1161423120 its reverse (213241611), we get a palindrome (1374664731).

The spelling of 1161423120 in words is "one billion, one hundred sixty-one million, four hundred twenty-three thousand, one hundred twenty".