40242415 has 4 divisors (see below), whose sum is σ = 48290904. Its totient is φ = 32193928.

The previous prime is 40242407. The next prime is 40242427. The reversal of 40242415 is 51424204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40242415 - 2³ = 40242407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4024237 + ... + 4024246.

It is an arithmetic number, because the mean of its divisors is an integer number (12072726).

Almost surely, 2^40242415 is an apocalyptic number.

40242415 is a deficient number, since it is larger than the sum of its proper divisors (8048489).

40242415 is an equidigital number, since it uses as much as digits as its factorization.

40242415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8048488.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 40242415 is about 6343.6909603164. The cubic root of 40242415 is about 342.6846713974.

Adding to 40242415 its reverse (51424204), we get a palindrome (91666619).

The spelling of 40242415 in words is "forty million, two hundred forty-two thousand, four hundred fifteen".