40402535 has 4 divisors (see below), whose sum is σ = 48483048. Its totient is φ = 32322024.

The previous prime is 40402519. The next prime is 40402543. The reversal of 40402535 is 53520404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40402535 - 2⁴ = 40402519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40402535.

It is a congruent number.

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, 4040249 + ... + 4040258.

It is an arithmetic number, because the mean of its divisors is an integer number (12120762).

Almost surely, 2^40402535 is an apocalyptic number.

40402535 is a deficient number, since it is larger than the sum of its proper divisors (8080513).

40402535 is an equidigital number, since it uses as much as digits as its factorization.

40402535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080512.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 40402535 is about 6356.2988444534. The cubic root of 40402535 is about 343.1385710561.

Adding to 40402535 its reverse (53520404), we get a palindrome (93922939).

The spelling of 40402535 in words is "forty million, four hundred two thousand, five hundred thirty-five".