145117136 has 20 divisors (see below), whose sum is σ = 295963200. Its totient is φ = 68739552.

The previous prime is 145117087. The next prime is 145117139. The reversal of 145117136 is 631711541.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 145117099 and 145117108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145117139) 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 3 ways as a sum of consecutive naturals, for example, 238376 + ... + 238983.

It is an arithmetic number, because the mean of its divisors is an integer number (14798160).

Almost surely, 2^145117136 is an apocalyptic number.

145117136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145117136 is an abundant number, since it is smaller than the sum of its proper divisors (150846064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145117136 is a wasteful number, since it uses less digits than its factorization.

145117136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477386 (or 477380 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 145117136 is about 12046.4574045650. The cubic root of 145117136 is about 525.5002168203.

Adding to 145117136 its reverse (631711541), we get a palindrome (776828677).

The spelling of 145117136 in words is "one hundred forty-five million, one hundred seventeen thousand, one hundred thirty-six".