40740642 has 12 divisors (see below), whose sum is σ = 88271430. Its totient is φ = 13580208.

The previous prime is 40740641. The next prime is 40740671. The reversal of 40740642 is 24604704.

40740642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 29909961 + 10830681 = 5469^2 + 3291^2 .

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (40740641) 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 5 ways as a sum of consecutive naturals, for example, 1131667 + ... + 1131702.

Almost surely, 2^40740642 is an apocalyptic number.

40740642 is an abundant number, since it is smaller than the sum of its proper divisors (47530788).

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

40740642 is a wasteful number, since it uses less digits than its factorization.

40740642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263377 (or 2263374 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 40740642 is about 6382.8396501871. The cubic root of 40740642 is about 344.0930938328.

The spelling of 40740642 in words is "forty million, seven hundred forty thousand, six hundred forty-two".