40921345 has 8 divisors (see below), whose sum is σ = 51690240. Its totient is φ = 31014000.

The previous prime is 40921343. The next prime is 40921351. The reversal of 40921345 is 54312904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40921345 - 2¹ = 40921343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40921343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215281 + ... + 215470.

It is an arithmetic number, because the mean of its divisors is an integer number (6461280).

Almost surely, 2^40921345 is an apocalyptic number.

It is an amenable number.

40921345 is a deficient number, since it is larger than the sum of its proper divisors (10768895).

40921345 is a wasteful number, since it uses less digits than its factorization.

40921345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430775.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 40921345 is about 6396.9793652942. The cubic root of 40921345 is about 344.6010792014.

The spelling of 40921345 in words is "forty million, nine hundred twenty-one thousand, three hundred forty-five".