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144872429 = 1329384277
BaseRepresentation
bin10001010001010…
…01001111101101
3101002121021121112
420220221033231
5244041404204
622213041405
73406252412
oct1050511755
9332537545
10144872429
117485a889
1240626265
1324025040
1415352109
15caba26e
hex8a293ed

144872429 has 8 divisors (see below), whose sum is σ = 161396760. Its totient is φ = 129116736.

The previous prime is 144872417. The next prime is 144872443. The reversal of 144872429 is 924278441.

144872429 = 23482 + 23492 + ... + 23732.

144872429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5396329 + 139476100 = 2323^2 + 11810^2 .

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 144872429 - 224 = 128095213 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 (144872459) 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, 191762 + ... + 192515.

It is an arithmetic number, because the mean of its divisors is an integer number (20174595).

Almost surely, 2144872429 is an apocalyptic number.

It is an amenable number.

144872429 is a deficient number, since it is larger than the sum of its proper divisors (16524331).

144872429 is a wasteful number, since it uses less digits than its factorization.

144872429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384319.

The product of its digits is 129024, while the sum is 41.

The square root of 144872429 is about 12036.2963157277. The cubic root of 144872429 is about 525.2046718232.

The spelling of 144872429 in words is "one hundred forty-four million, eight hundred seventy-two thousand, four hundred twenty-nine".

Divisors: 1 13 29 377 384277 4995601 11144033 144872429