40241945 has 4 divisors (see below), whose sum is σ = 48290340. Its totient is φ = 32193552.

The previous prime is 40241933. The next prime is 40241959. The reversal of 40241945 is 54914204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30426256 + 9815689 = 5516^2 + 3133^2 .

It is a cyclic number.

It is not a de Polignac number, because 40241945 - 2²⁰ = 39193369 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4024190 + ... + 4024199.

It is an arithmetic number, because the mean of its divisors is an integer number (12072585).

Almost surely, 2^40241945 is an apocalyptic number.

It is an amenable number.

40241945 is a deficient number, since it is larger than the sum of its proper divisors (8048395).

40241945 is an equidigital number, since it uses as much as digits as its factorization.

40241945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8048394.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 40241945 is about 6343.6539155285. The cubic root of 40241945 is about 342.6833372957.

It can be divided in two parts, 40 and 241945, that multiplied together give a triangular number (9677800 = T₄₃₉₉).

The spelling of 40241945 in words is "forty million, two hundred forty-one thousand, nine hundred forty-five".