40742185 has 16 divisors (see below), whose sum is σ = 54473472. Its totient is φ = 28998400.

The previous prime is 40742171. The next prime is 40742197. The reversal of 40742185 is 58124704.

It is not a de Polignac number, because 40742185 - 2¹¹ = 40740137 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, 5296 + ... + 10465.

It is an arithmetic number, because the mean of its divisors is an integer number (3404592).

Almost surely, 2^40742185 is an apocalyptic number.

It is an amenable number.

40742185 is a deficient number, since it is larger than the sum of its proper divisors (13731287).

40742185 is a wasteful number, since it uses less digits than its factorization.

40742185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15824.

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

The square root of 40742185 is about 6382.9605200095. The cubic root of 40742185 is about 344.0974378074.

Adding to 40742185 its reverse (58124704), we get a palindrome (98866889).

The spelling of 40742185 in words is "forty million, seven hundred forty-two thousand, one hundred eighty-five".