40645134 has 24 divisors (see below), whose sum is σ = 88976160. Its totient is φ = 13408128.

The previous prime is 40645133. The next prime is 40645217. The reversal of 40645134 is 43154604.

40645134 is a `hidden beast` number, since 4 + 0 + 645 + 13 + 4 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40645098 and 40645107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40645133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9894 + ... + 13385.

It is an arithmetic number, because the mean of its divisors is an integer number (3707340).

Almost surely, 2^40645134 is an apocalyptic number.

40645134 is an abundant number, since it is smaller than the sum of its proper divisors (48331026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40645134 is a wasteful number, since it uses less digits than its factorization.

40645134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23384 (or 23381 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 40645134 is about 6375.3536372503. The cubic root of 40645134 is about 343.8239984385.

Adding to 40645134 its reverse (43154604), we get a palindrome (83799738).

The spelling of 40645134 in words is "forty million, six hundred forty-five thousand, one hundred thirty-four".