40707442 has 4 divisors (see below), whose sum is σ = 61061166. Its totient is φ = 20353720.

The previous prime is 40707439. The next prime is 40707449. The reversal of 40707442 is 24470704.

40707442 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., 36132121 + 4575321 = 6011^2 + 2139^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40707442.

It is not an unprimeable number, because it can be changed into a prime (40707449) 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, 10176859 + ... + 10176862.

Almost surely, 2^40707442 is an apocalyptic number.

40707442 is a deficient number, since it is larger than the sum of its proper divisors (20353724).

40707442 is a wasteful number, since it uses less digits than its factorization.

40707442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20353723.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 40707442 is about 6380.2383967999. The cubic root of 40707442 is about 343.9996000085. Note that the first 3 decimals are identical.

The spelling of 40707442 in words is "forty million, seven hundred seven thousand, four hundred forty-two".