40124545 has 8 divisors (see below), whose sum is σ = 49809960. Its totient is φ = 30992640.

The previous prime is 40124537. The next prime is 40124597. The reversal of 40124545 is 54542104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1597696 + 38526849 = 1264^2 + 6207^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40124545 - 2³ = 40124537 is a prime.

It is a super-2 number, since 2×40124545² = 3219958222914050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138216 + ... + 138505.

It is an arithmetic number, because the mean of its divisors is an integer number (6226245).

Almost surely, 2^40124545 is an apocalyptic number.

It is an amenable number.

40124545 is a deficient number, since it is larger than the sum of its proper divisors (9685415).

40124545 is a wasteful number, since it uses less digits than its factorization.

40124545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276755.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 40124545 is about 6334.3938147229. The cubic root of 40124545 is about 342.3497698365.

Adding to 40124545 its reverse (54542104), we get a palindrome (94666649).

The spelling of 40124545 in words is "forty million, one hundred twenty-four thousand, five hundred forty-five".