40010642 has 8 divisors (see below), whose sum is σ = 68589696. Its totient is φ = 17147412.

The previous prime is 40010627. The next prime is 40010647. The reversal of 40010642 is 24601004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40010642.

It is not an unprimeable number, because it can be changed into a prime (40010647) 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, 1428938 + ... + 1428965.

It is an arithmetic number, because the mean of its divisors is an integer number (8573712).

Almost surely, 2^40010642 is an apocalyptic number.

40010642 is a deficient number, since it is larger than the sum of its proper divisors (28579054).

40010642 is a wasteful number, since it uses less digits than its factorization.

40010642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857912.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40010642 is about 6325.3965883571. The cubic root of 40010642 is about 342.0255159194.

Adding to 40010642 its reverse (24601004), we get a palindrome (64611646).

The spelling of 40010642 in words is "forty million, ten thousand, six hundred forty-two".