40115402 has 8 divisors (see below), whose sum is σ = 60219396. Its totient is φ = 20042272.

The previous prime is 40115389. The next prime is 40115407. The reversal of 40115402 is 20451104.

It can be written as a sum of positive squares in 2 ways, for example, as 38925121 + 1190281 = 6239^2 + 1091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40115407) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4133 + ... + 9864.

Almost surely, 2^40115402 is an apocalyptic number.

40115402 is a deficient number, since it is larger than the sum of its proper divisors (20103994).

40115402 is a wasteful number, since it uses less digits than its factorization.

40115402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15432.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 40115402 is about 6333.6720786602. The cubic root of 40115402 is about 342.3237646259.

Adding to 40115402 its reverse (20451104), we get a palindrome (60566506).

The spelling of 40115402 in words is "forty million, one hundred fifteen thousand, four hundred two".