40491742 has 8 divisors (see below), whose sum is σ = 61275456. Its totient is φ = 20066592.

The previous prime is 40491701. The next prime is 40491749. The reversal of 40491742 is 24719404.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40491749) 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, 89358 + ... + 89809.

It is an arithmetic number, because the mean of its divisors is an integer number (7659432).

Almost surely, 2^40491742 is an apocalyptic number.

40491742 is a deficient number, since it is larger than the sum of its proper divisors (20783714).

40491742 is a wasteful number, since it uses less digits than its factorization.

40491742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179282.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 40491742 is about 6363.3121878468. The cubic root of 40491742 is about 343.3909303147.

The spelling of 40491742 in words is "forty million, four hundred ninety-one thousand, seven hundred forty-two".