145245243 has 16 divisors (see below), whose sum is σ = 227517696. Its totient is φ = 81255840.

The previous prime is 145245223. The next prime is 145245251. The reversal of 145245243 is 342542541.

It is not a de Polignac number, because 145245243 - 2¹⁴ = 145228859 is a prime.

It is a super-2 number, since 2×145245243² = 42192361228258098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145245243.

It is not an unprimeable number, because it can be changed into a prime (145245223) 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 15 ways as a sum of consecutive naturals, for example, 168855 + ... + 169712.

It is an arithmetic number, because the mean of its divisors is an integer number (14219856).

Almost surely, 2^145245243 is an apocalyptic number.

145245243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145245243 is a deficient number, since it is larger than the sum of its proper divisors (82272453).

145245243 is a wasteful number, since it uses less digits than its factorization.

145245243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338594.

The product of its digits is 19200, while the sum is 30.

The square root of 145245243 is about 12051.7734379634. The cubic root of 145245243 is about 525.6548056306.

Adding to 145245243 its reverse (342542541), we get a palindrome (487787784).

The spelling of 145245243 in words is "one hundred forty-five million, two hundred forty-five thousand, two hundred forty-three".