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123032461421 = 1728125755173
BaseRepresentation
bin111001010010101001…
…1100110000001101101
3102202120100021121112102
41302211103212001231
54003432302231141
6132304220344445
711613600444542
oct1624523460155
9382510247472
10123032461421
11481a5687291
121ba173a5125
13b7a952603c
145d51d9cbc9
15330130c99b
hex1ca54e606d

123032461421 has 8 divisors (see below), whose sum is σ = 130733263224. Its totient is φ = 115383170560.

The previous prime is 123032461403. The next prime is 123032461469. The reversal of 123032461421 is 124164230321.

It can be written as a sum of positive squares in 4 ways, for example, as 23574224521 + 99458236900 = 153539^2 + 315370^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 123032461421 - 226 = 122965352557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123032461481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12872810 + ... + 12882363.

It is an arithmetic number, because the mean of its divisors is an integer number (16341657903).

Almost surely, 2123032461421 is an apocalyptic number.

It is an amenable number.

123032461421 is a deficient number, since it is larger than the sum of its proper divisors (7700801803).

123032461421 is a wasteful number, since it uses less digits than its factorization.

123032461421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25755471.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 123032461421 its reverse (124164230321), we get a palindrome (247196691742).

The spelling of 123032461421 in words is "one hundred twenty-three billion, thirty-two million, four hundred sixty-one thousand, four hundred twenty-one".

Divisors: 1 17 281 4777 25755173 437837941 7237203613 123032461421