145139145 has 16 divisors (see below), whose sum is σ = 232374912. Its totient is φ = 77356800.

The previous prime is 145139129. The next prime is 145139201. The reversal of 145139145 is 541931541.

It is not a de Polignac number, because 145139145 - 2⁴ = 145139129 is a prime.

It is a super-2 number, since 2×145139145² = 42130742822662050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 36369 + ... + 40161.

It is an arithmetic number, because the mean of its divisors is an integer number (14523432).

Almost surely, 2^145139145 is an apocalyptic number.

145139145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145139145 is a deficient number, since it is larger than the sum of its proper divisors (87235767).

145139145 is a wasteful number, since it uses less digits than its factorization.

145139145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6352.

The product of its digits is 10800, while the sum is 33.

The square root of 145139145 is about 12047.3708750084. The cubic root of 145139145 is about 525.5267819109.

The spelling of 145139145 in words is "one hundred forty-five million, one hundred thirty-nine thousand, one hundred forty-five".