40007442 has 32 divisors (see below), whose sum is σ = 84759552. Its totient is φ = 12562704.

The previous prime is 40007393. The next prime is 40007467. The reversal of 40007442 is 24470004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7083 + ... + 11409.

It is an arithmetic number, because the mean of its divisors is an integer number (2648736).

Almost surely, 2^40007442 is an apocalyptic number.

40007442 is an abundant number, since it is smaller than the sum of its proper divisors (44752110).

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

40007442 is a wasteful number, since it uses less digits than its factorization.

40007442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 40007442 is about 6325.1436347327. The cubic root of 40007442 is about 342.0163974218.

Adding to 40007442 its reverse (24470004), we get a palindrome (64477446).

The spelling of 40007442 in words is "forty million, seven thousand, four hundred forty-two".