40742255 has 8 divisors (see below), whose sum is σ = 49095024. Its totient is φ = 32457600.

The previous prime is 40742243. The next prime is 40742257. The reversal of 40742255 is 55224704.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40742255 - 2⁴ = 40742239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40742257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15701 + ... + 18110.

It is an arithmetic number, because the mean of its divisors is an integer number (6136878).

Almost surely, 2^40742255 is an apocalyptic number.

40742255 is a deficient number, since it is larger than the sum of its proper divisors (8352769).

40742255 is a wasteful number, since it uses less digits than its factorization.

40742255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34057.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 40742255 is about 6382.9660033561. The cubic root of 40742255 is about 344.0976348743.

Adding to 40742255 its reverse (55224704), we get a palindrome (95966959).

The spelling of 40742255 in words is "forty million, seven hundred forty-two thousand, two hundred fifty-five".