40153642 has 4 divisors (see below), whose sum is σ = 60230466. Its totient is φ = 20076820.

The previous prime is 40153627. The next prime is 40153667. The reversal of 40153642 is 24635104.

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., 25492401 + 14661241 = 5049^2 + 3829^2 .

It is a super-2 number, since 2×40153642² = 3224629931728328, which contains 22 as substring.

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, 10038409 + ... + 10038412.

Almost surely, 2^40153642 is an apocalyptic number.

40153642 is a deficient number, since it is larger than the sum of its proper divisors (20076824).

40153642 is a wasteful number, since it uses less digits than its factorization.

40153642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20076823.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40153642 is about 6336.6901454939. The cubic root of 40153642 is about 342.4325034379.

Adding to 40153642 its reverse (24635104), we get a palindrome (64788746).

The spelling of 40153642 in words is "forty million, one hundred fifty-three thousand, six hundred forty-two".