40302057 has 16 divisors (see below), whose sum is σ = 55423872. Its totient is φ = 26033280.

The previous prime is 40302047. The next prime is 40302071. The reversal of 40302057 is 75020304.

It is a happy number.

It is not a de Polignac number, because 40302057 - 2⁶ = 40301993 is a prime.

It is a super-3 number, since 3×40302057³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40302037) 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, 18268 + ... + 20354.

It is an arithmetic number, because the mean of its divisors is an integer number (3463992).

Almost surely, 2^40302057 is an apocalyptic number.

It is an amenable number.

40302057 is a deficient number, since it is larger than the sum of its proper divisors (15121815).

40302057 is a wasteful number, since it uses less digits than its factorization.

40302057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 40302057 is about 6348.3901108864. The cubic root of 40302057 is about 342.8538818390.

The spelling of 40302057 in words is "forty million, three hundred two thousand, fifty-seven".