40287145 has 16 divisors (see below), whose sum is σ = 51282432. Its totient is φ = 30317760.

The previous prime is 40287139. The next prime is 40287151. The reversal of 40287145 is 54178204.

It is an interprime number because it is at equal distance from previous prime (40287139) and next prime (40287151).

It is not a de Polignac number, because 40287145 - 2⁵ = 40287113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4144 + ... + 9886.

It is an arithmetic number, because the mean of its divisors is an integer number (3205152).

Almost surely, 2^40287145 is an apocalyptic number.

It is an amenable number.

40287145 is a deficient number, since it is larger than the sum of its proper divisors (10995287).

40287145 is a wasteful number, since it uses less digits than its factorization.

40287145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5832.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 40287145 is about 6347.2155312389. The cubic root of 40287145 is about 342.8115906330.

The spelling of 40287145 in words is "forty million, two hundred eighty-seven thousand, one hundred forty-five".