145542293 has 12 divisors (see below), whose sum is σ = 160582500. Its totient is φ = 131803776.

The previous prime is 145542289. The next prime is 145542301. The reversal of 145542293 is 392245541.

It can be written as a sum of positive squares in 6 ways, for example, as 7409284 + 138133009 = 2722^2 + 11753^2 .

It is not a de Polignac number, because 145542293 - 2² = 145542289 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145542233) 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 11 ways as a sum of consecutive naturals, for example, 833 + ... + 17081.

It is an arithmetic number, because the mean of its divisors is an integer number (13381875).

Almost surely, 2^145542293 is an apocalyptic number.

145542293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145542293 is a deficient number, since it is larger than the sum of its proper divisors (15040207).

145542293 is a wasteful number, since it uses less digits than its factorization.

145542293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16328 (or 16315 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 145542293 is about 12064.0910556909. The cubic root of 145542293 is about 526.0129112957.

The spelling of 145542293 in words is "one hundred forty-five million, five hundred forty-two thousand, two hundred ninety-three".