40510642 has 4 divisors (see below), whose sum is σ = 60765966. Its totient is φ = 20255320.

The previous prime is 40510627. The next prime is 40510667. The reversal of 40510642 is 24601504.

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

It can be written as a sum of positive squares in only one way, i.e., 36012001 + 4498641 = 6001^2 + 2121^2 .

It is a super-2 number, since 2×40510642² = 3282224230504328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 10127659 + ... + 10127662.

Almost surely, 2^40510642 is an apocalyptic number.

40510642 is a deficient number, since it is larger than the sum of its proper divisors (20255324).

40510642 is a wasteful number, since it uses less digits than its factorization.

40510642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20255323.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 40510642 is about 6364.7970902457. The cubic root of 40510642 is about 343.4443492651. Note that the first 3 decimals are identical.

The spelling of 40510642 in words is "forty million, five hundred ten thousand, six hundred forty-two".