40569542 has 16 divisors (see below), whose sum is σ = 66461472. Its totient is φ = 18459840.

The previous prime is 40569509. The next prime is 40569547. The reversal of 40569542 is 24596504.

It is a happy number.

It is a super-5 number, since 5×40569542⁵ (a number of 39 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40569547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9143 + ... + 12834.

It is an arithmetic number, because the mean of its divisors is an integer number (4153842).

Almost surely, 2^40569542 is an apocalyptic number.

40569542 is a deficient number, since it is larger than the sum of its proper divisors (25891930).

40569542 is a wasteful number, since it uses less digits than its factorization.

40569542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22063.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 40569542 is about 6369.4224227947. The cubic root of 40569542 is about 343.6107176993.

The spelling of 40569542 in words is "forty million, five hundred sixty-nine thousand, five hundred forty-two".