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1230542934 = 23205090489
BaseRepresentation
bin100100101011000…
…1001100001010110
310011202111001120020
41021112021201112
510010004333214
6322034450010
742331304505
oct11126114126
93152431506
101230542934
11581678135
122a4133906
13167c2961a
14b960083c
15730704a9
hex49589856

1230542934 has 8 divisors (see below), whose sum is σ = 2461085880. Its totient is φ = 410180976.

The previous prime is 1230542933. The next prime is 1230542959. The reversal of 1230542934 is 4392450321.

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

1230542934 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1230542895 and 1230542904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230542933) 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, 102545239 + ... + 102545250.

It is an arithmetic number, because the mean of its divisors is an integer number (307635735).

Almost surely, 21230542934 is an apocalyptic number.

1230542934 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1230542934 is a wasteful number, since it uses less digits than its factorization.

1230542934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205090494.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1230542934 is about 35079.0953988269. The cubic root of 1230542934 is about 1071.5988947105.

The spelling of 1230542934 in words is "one billion, two hundred thirty million, five hundred forty-two thousand, nine hundred thirty-four".

Divisors: 1 2 3 6 205090489 410180978 615271467 1230542934