40746321 has 80 divisors (see below), whose sum is σ = 78059520. Its totient is φ = 20567520.

The previous prime is 40746319. The next prime is 40746323. The reversal of 40746321 is 12364704.

It is an interprime number because it is at equal distance from previous prime (40746319) and next prime (40746323).

It is not a de Polignac number, because 40746321 - 2¹ = 40746319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40746323) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 293070 + ... + 293208.

It is an arithmetic number, because the mean of its divisors is an integer number (975744).

Almost surely, 2^40746321 is an apocalyptic number.

It is an amenable number.

40746321 is a deficient number, since it is larger than the sum of its proper divisors (37313199).

40746321 is a wasteful number, since it uses less digits than its factorization.

40746321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 40746321 is about 6383.2844993780. The cubic root of 40746321 is about 344.1090812579.

The spelling of 40746321 in words is "forty million, seven hundred forty-six thousand, three hundred twenty-one".