40642436 has 6 divisors (see below), whose sum is σ = 71124270. Its totient is φ = 20321216.

The previous prime is 40642421. The next prime is 40642447. The reversal of 40642436 is 63424604.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40576900 + 65536 = 6370^2 + 256^2 .

It is a super-3 number, since 3×40642436³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40642399 and 40642408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080301 + ... + 5080308.

It is an arithmetic number, because the mean of its divisors is an integer number (11854045).

Almost surely, 2^40642436 is an apocalyptic number.

It is an amenable number.

40642436 is a deficient number, since it is larger than the sum of its proper divisors (30481834).

40642436 is a wasteful number, since it uses less digits than its factorization.

40642436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10160613 (or 10160611 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 40642436 is about 6375.1420376334. The cubic root of 40642436 is about 343.8163906588.

The spelling of 40642436 in words is "forty million, six hundred forty-two thousand, four hundred thirty-six".