40302405 has 48 divisors (see below), whose sum is σ = 82083456. Its totient is φ = 18034560.

The previous prime is 40302391. The next prime is 40302407. The reversal of 40302405 is 50420304.

It is a happy number.

It is not a de Polignac number, because 40302405 - 2¹⁰ = 40301381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40302407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3304 + ... + 9566.

It is an arithmetic number, because the mean of its divisors is an integer number (1710072).

Almost surely, 2^40302405 is an apocalyptic number.

40302405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40302405 is an abundant number, since it is smaller than the sum of its proper divisors (41781051).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40302405 is a wasteful number, since it uses less digits than its factorization.

40302405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6298 (or 6295 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40302405 is about 6348.4175193508. The cubic root of 40302405 is about 342.8548686605.

Adding to 40302405 its reverse (50420304), we get a palindrome (90722709).

The spelling of 40302405 in words is "forty million, three hundred two thousand, four hundred five".