40342445 has 32 divisors (see below), whose sum is σ = 60238080. Its totient is φ = 25482240.

The previous prime is 40342441. The next prime is 40342481. The reversal of 40342445 is 54424304.

It is not a de Polignac number, because 40342445 - 2² = 40342441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10496 + ... + 13814.

It is an arithmetic number, because the mean of its divisors is an integer number (1882440).

Almost surely, 2^40342445 is an apocalyptic number.

It is an amenable number.

40342445 is a deficient number, since it is larger than the sum of its proper divisors (19895635).

40342445 is a wasteful number, since it uses less digits than its factorization.

40342445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 40342445 is about 6351.5702782855. The cubic root of 40342445 is about 342.9683719388.

Adding to 40342445 its reverse (54424304), we get a palindrome (94766749).

The spelling of 40342445 in words is "forty million, three hundred forty-two thousand, four hundred forty-five".