40215254 has 16 divisors (see below), whose sum is σ = 61086528. Its totient is φ = 19854912.

The previous prime is 40215239. The next prime is 40215269. The reversal of 40215254 is 45251204.

It is a happy number.

40215254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40215239) and next prime (40215269).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86627 + ... + 87089.

It is an arithmetic number, because the mean of its divisors is an integer number (3817908).

Almost surely, 2^40215254 is an apocalyptic number.

40215254 is a deficient number, since it is larger than the sum of its proper divisors (20871274).

40215254 is a wasteful number, since it uses less digits than its factorization.

40215254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 40215254 is about 6341.5498105747. The cubic root of 40215254 is about 342.6075574604.

Adding to 40215254 its reverse (45251204), we get a palindrome (85466458).

The spelling of 40215254 in words is "forty million, two hundred fifteen thousand, two hundred fifty-four".