40235742 has 12 divisors (see below), whose sum is σ = 87177480. Its totient is φ = 13411908.

The previous prime is 40235729. The next prime is 40235747. The reversal of 40235742 is 24753204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40235747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117642 + ... + 1117677.

It is an arithmetic number, because the mean of its divisors is an integer number (7264790).

Almost surely, 2^40235742 is an apocalyptic number.

40235742 is an abundant number, since it is smaller than the sum of its proper divisors (46941738).

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

40235742 is a wasteful number, since it uses less digits than its factorization.

40235742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235327 (or 2235324 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 40235742 is about 6343.1649828772. The cubic root of 40235742 is about 342.6657290185.

Adding to 40235742 its reverse (24753204), we get a palindrome (64988946).

The spelling of 40235742 in words is "forty million, two hundred thirty-five thousand, seven hundred forty-two".