40373642 has 8 divisors (see below), whose sum is σ = 60768036. Its totient is φ = 20117632.

The previous prime is 40373621. The next prime is 40373647. The reversal of 40373642 is 24637304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37687321 + 2686321 = 6139^2 + 1639^2 .

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 (40373647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33863 + ... + 35034.

Almost surely, 2^40373642 is an apocalyptic number.

40373642 is a deficient number, since it is larger than the sum of its proper divisors (20394394).

40373642 is a wasteful number, since it uses less digits than its factorization.

40373642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69192.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 40373642 is about 6354.0256530801. The cubic root of 40373642 is about 343.0567555050.

The spelling of 40373642 in words is "forty million, three hundred seventy-three thousand, six hundred forty-two".