40302903 has 16 divisors (see below), whose sum is σ = 57044736. Its totient is φ = 25223040.

The previous prime is 40302901. The next prime is 40302931. The reversal of 40302903 is 30920304.

It is not a de Polignac number, because 40302903 - 2¹ = 40302901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40302903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40302901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25918 + ... + 27428.

It is an arithmetic number, because the mean of its divisors is an integer number (3565296).

Almost surely, 2^40302903 is an apocalyptic number.

40302903 is a deficient number, since it is larger than the sum of its proper divisors (16741833).

40302903 is a wasteful number, since it uses less digits than its factorization.

40302903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 40302903 is about 6348.4567416026. The cubic root of 40302903 is about 342.8562808262.

The spelling of 40302903 in words is "forty million, three hundred two thousand, nine hundred three".