40161424 has 20 divisors (see below), whose sum is σ = 79090300. Its totient is φ = 19751040.

The previous prime is 40161419. The next prime is 40161469. The reversal of 40161424 is 42416104.

It can be written as a sum of positive squares in 2 ways, for example, as 2560000 + 37601424 = 1600^2 + 6132^2 .

It is a super-3 number, since 3×40161424³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 40161395 and 40161404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19599 + ... + 21550.

It is an arithmetic number, because the mean of its divisors is an integer number (3954515).

Almost surely, 2^40161424 is an apocalyptic number.

It is an amenable number.

40161424 is a deficient number, since it is larger than the sum of its proper divisors (38928876).

40161424 is a wasteful number, since it uses less digits than its factorization.

40161424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41218 (or 41212 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 40161424 is about 6337.3041587098. The cubic root of 40161424 is about 342.4546237859.

Adding to 40161424 its reverse (42416104), we get a palindrome (82577528).

The spelling of 40161424 in words is "forty million, one hundred sixty-one thousand, four hundred twenty-four".