40426505 has 16 divisors (see below), whose sum is σ = 56384640. Its totient is φ = 27249792.

The previous prime is 40426499. The next prime is 40426517. The reversal of 40426505 is 50562404.

It is a cyclic number.

It is not a de Polignac number, because 40426505 - 2¹² = 40422409 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 7724 + ... + 11853.

It is an arithmetic number, because the mean of its divisors is an integer number (3524040).

Almost surely, 2^40426505 is an apocalyptic number.

It is an amenable number.

40426505 is a deficient number, since it is larger than the sum of its proper divisors (15958135).

40426505 is a wasteful number, since it uses less digits than its factorization.

40426505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19648.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 40426505 is about 6358.1840961079. The cubic root of 40426505 is about 343.2064166794.

Adding to 40426505 its reverse (50562404), we get a palindrome (90988909).

The spelling of 40426505 in words is "forty million, four hundred twenty-six thousand, five hundred five".