145302039 has 16 divisors (see below), whose sum is σ = 216352000. Its totient is φ = 96377688.

The previous prime is 145302013. The next prime is 145302083. The reversal of 145302039 is 930203541.

145302039 is a `hidden beast` number, since 1 + 453 + 0 + 203 + 9 = 666.

It is not a de Polignac number, because 145302039 - 2¹⁹ = 144777751 is a prime.

It is a super-2 number, since 2×145302039² = 42225365075115042, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145302089) 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, 8149 + ... + 18894.

It is an arithmetic number, because the mean of its divisors is an integer number (13522000).

Almost surely, 2^145302039 is an apocalyptic number.

145302039 is a deficient number, since it is larger than the sum of its proper divisors (71049961).

145302039 is a wasteful number, since it uses less digits than its factorization.

145302039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27251 (or 27245 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 145302039 is about 12054.1295413647. The cubic root of 145302039 is about 525.7233132093.

The spelling of 145302039 in words is "one hundred forty-five million, three hundred two thousand, thirty-nine".