40069542 has 16 divisors (see below), whose sum is σ = 83623680. Its totient is φ = 12775752.

The previous prime is 40069541. The next prime is 40069553. The reversal of 40069542 is 24596004.

40069542 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 (40069541) 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, 145042 + ... + 145317.

It is an arithmetic number, because the mean of its divisors is an integer number (5226480).

Almost surely, 2^40069542 is an apocalyptic number.

40069542 is an abundant number, since it is smaller than the sum of its proper divisors (43554138).

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

40069542 is a wasteful number, since it uses less digits than its factorization.

40069542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290387.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40069542 is about 6330.0507106973. The cubic root of 40069542 is about 342.1932665028.

The spelling of 40069542 in words is "forty million, sixty-nine thousand, five hundred forty-two".