40030442 has 16 divisors (see below), whose sum is σ = 62985600. Its totient is φ = 19044432.

The previous prime is 40030433. The next prime is 40030453. The reversal of 40030442 is 24403004.

It is a self number, because there is not a number n which added to its sum of digits gives 40030442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6968 + ... + 11340.

It is an arithmetic number, because the mean of its divisors is an integer number (3936600).

Almost surely, 2^40030442 is an apocalyptic number.

40030442 is a deficient number, since it is larger than the sum of its proper divisors (22955158).

40030442 is a wasteful number, since it uses less digits than its factorization.

40030442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4597.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40030442 is about 6326.9615140287. The cubic root of 40030442 is about 342.0819258151.

Adding to 40030442 its reverse (24403004), we get a palindrome (64433446).

The spelling of 40030442 in words is "forty million, thirty thousand, four hundred forty-two".