40006342 has 4 divisors (see below), whose sum is σ = 60009516. Its totient is φ = 20003170.

The previous prime is 40006339. The next prime is 40006357. The reversal of 40006342 is 24360004.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001584 + ... + 10001587.

It is an arithmetic number, because the mean of its divisors is an integer number (15002379).

Almost surely, 2^40006342 is an apocalyptic number.

40006342 is a deficient number, since it is larger than the sum of its proper divisors (20003174).

40006342 is a wasteful number, since it uses less digits than its factorization.

40006342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20003173.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40006342 is about 6325.0566795879. The cubic root of 40006342 is about 342.0132628259.

Adding to 40006342 its reverse (24360004), we get a palindrome (64366346).

The spelling of 40006342 in words is "forty million, six thousand, three hundred forty-two".