145531124 has 12 divisors (see below), whose sum is σ = 255336900. Its totient is φ = 72577728.

The previous prime is 145531123. The next prime is 145531151. The reversal of 145531124 is 421135541.

It can be written as a sum of positive squares in 2 ways, for example, as 49843600 + 95687524 = 7060^2 + 9782^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145531093 and 145531102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145531123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45209 + ... + 48320.

It is an arithmetic number, because the mean of its divisors is an integer number (21278075).

Almost surely, 2^145531124 is an apocalyptic number.

It is an amenable number.

145531124 is a deficient number, since it is larger than the sum of its proper divisors (109805776).

145531124 is a wasteful number, since it uses less digits than its factorization.

145531124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93922 (or 93920 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 145531124 is about 12063.6281441364. The cubic root of 145531124 is about 525.9994554395. Note that the first 3 decimals are identical.

Adding to 145531124 its reverse (421135541), we get a palindrome (566666665).

The spelling of 145531124 in words is "one hundred forty-five million, five hundred thirty-one thousand, one hundred twenty-four".