40045542 has 16 divisors (see below), whose sum is σ = 81449280. Its totient is φ = 13122152.

The previous prime is 40045517. The next prime is 40045547. The reversal of 40045542 is 24554004.

40045542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40045547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56208 + ... + 56915.

It is an arithmetic number, because the mean of its divisors is an integer number (5090580).

Almost surely, 2^40045542 is an apocalyptic number.

40045542 is an abundant number, since it is smaller than the sum of its proper divisors (41403738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40045542 is a wasteful number, since it uses less digits than its factorization.

40045542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113187.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 40045542 is about 6328.1547073377. The cubic root of 40045542 is about 342.1249329822.

Adding to 40045542 its reverse (24554004), we get a palindrome (64599546).

The spelling of 40045542 in words is "forty million, forty-five thousand, five hundred forty-two".