40054442 has 4 divisors (see below), whose sum is σ = 60081666. Its totient is φ = 20027220.

The previous prime is 40054433. The next prime is 40054447. The reversal of 40054442 is 24445004.

40054442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26739241 + 13315201 = 5171^2 + 3649^2 .

It is not an unprimeable number, because it can be changed into a prime (40054447) 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 as a sum of consecutive naturals, namely, 10013609 + ... + 10013612.

Almost surely, 2^40054442 is an apocalyptic number.

40054442 is a deficient number, since it is larger than the sum of its proper divisors (20027224).

40054442 is a wasteful number, since it uses less digits than its factorization.

40054442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20027223.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 40054442 is about 6328.8578748460. The cubic root of 40054442 is about 342.1502765136.

Adding to 40054442 its reverse (24445004), we get a palindrome (64499446).

The spelling of 40054442 in words is "forty million, fifty-four thousand, four hundred forty-two".