40356042 has 16 divisors (see below), whose sum is σ = 80775840. Its totient is φ = 13441392.

The previous prime is 40356037. The next prime is 40356049. The reversal of 40356042 is 24065304.

40356042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40356042² = 3257220251811528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40356049) 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, 10884 + ... + 14112.

It is an arithmetic number, because the mean of its divisors is an integer number (5048490).

Almost surely, 2^40356042 is an apocalyptic number.

40356042 is an abundant number, since it is smaller than the sum of its proper divisors (40419798).

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

40356042 is a wasteful number, since it uses less digits than its factorization.

40356042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5317.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40356042 is about 6352.6405533447. The cubic root of 40356042 is about 343.0068989141.

The spelling of 40356042 in words is "forty million, three hundred fifty-six thousand, forty-two".