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145442153 = 373930869
BaseRepresentation
bin10001010101101…
…00010101101001
3101010200020010102
420222310111221
5244213122103
622233155145
73414144413
oct1052642551
9333606112
10145442153
117510992a
124085bab5
132419445c
141545d9b3
15cb7de88
hex8ab4569

145442153 has 4 divisors (see below), whose sum is σ = 149373060. Its totient is φ = 141511248.

The previous prime is 145442149. The next prime is 145442189. The reversal of 145442153 is 351244541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107889769 + 37552384 = 10387^2 + 6128^2 .

It is a cyclic number.

It is not a de Polignac number, because 145442153 - 22 = 145442149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145442753) 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, 1965398 + ... + 1965471.

It is an arithmetic number, because the mean of its divisors is an integer number (37343265).

Almost surely, 2145442153 is an apocalyptic number.

It is an amenable number.

145442153 is a deficient number, since it is larger than the sum of its proper divisors (3930907).

145442153 is an equidigital number, since it uses as much as digits as its factorization.

145442153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930906.

The product of its digits is 9600, while the sum is 29.

The square root of 145442153 is about 12059.9400081427. The cubic root of 145442153 is about 525.8922430065.

Adding to 145442153 its reverse (351244541), we get a palindrome (496686694).

The spelling of 145442153 in words is "one hundred forty-five million, four hundred forty-two thousand, one hundred fifty-three".

Divisors: 1 37 3930869 145442153