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154232041 = 179072473
BaseRepresentation
bin10010011000101…
…10010011101001
3101202012210120211
421030112103221
5303440411131
623145421121
73551644045
oct1114262351
9352183524
10154232041
117a0728a7
124379a7a1
1325c51282
14166ab025
15d8185b1
hex93164e9

154232041 has 4 divisors (see below), whose sum is σ = 163304532. Its totient is φ = 145159552.

The previous prime is 154232033. The next prime is 154232059. The reversal of 154232041 is 140232451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140232451 = 313448027.

It can be written as a sum of positive squares in 2 ways, for example, as 135047641 + 19184400 = 11621^2 + 4380^2 .

It is a cyclic number.

It is not a de Polignac number, because 154232041 - 23 = 154232033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154232081) 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, 4536220 + ... + 4536253.

It is an arithmetic number, because the mean of its divisors is an integer number (40826133).

Almost surely, 2154232041 is an apocalyptic number.

It is an amenable number.

154232041 is a deficient number, since it is larger than the sum of its proper divisors (9072491).

154232041 is an equidigital number, since it uses as much as digits as its factorization.

154232041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9072490.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 154232041 is about 12419.0193252124. The cubic root of 154232041 is about 536.2799191816.

Adding to 154232041 its reverse (140232451), we get a palindrome (294464492).

The spelling of 154232041 in words is "one hundred fifty-four million, two hundred thirty-two thousand, forty-one".

Divisors: 1 17 9072473 154232041