145285143 has 8 divisors (see below), whose sum is σ = 193798656. Its totient is φ = 96814200.

The previous prime is 145285121. The next prime is 145285177. The reversal of 145285143 is 341582541.

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

It is a de Polignac number, because none of the positive numbers 2^k-145285143 is a prime.

It is a super-2 number, since 2×145285143² = 42215545553060898, which contains 22 as substring.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145285193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1573 + ... + 17118.

It is an arithmetic number, because the mean of its divisors is an integer number (24224832).

Almost surely, 2^145285143 is an apocalyptic number.

145285143 is a deficient number, since it is larger than the sum of its proper divisors (48513513).

145285143 is a wasteful number, since it uses less digits than its factorization.

145285143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21285.

The product of its digits is 19200, while the sum is 33.

The square root of 145285143 is about 12053.4286823294. The cubic root of 145285143 is about 525.7029350474.

The spelling of 145285143 in words is "one hundred forty-five million, two hundred eighty-five thousand, one hundred forty-three".