40242455 has 8 divisors (see below), whose sum is σ = 52681104. Its totient is φ = 29267200.

The previous prime is 40242427. The next prime is 40242457. The reversal of 40242455 is 55424204.

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

It is a de Polignac number, because none of the positive numbers 2^k-40242455 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 (40242457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365786 + ... + 365895.

It is an arithmetic number, because the mean of its divisors is an integer number (6585138).

Almost surely, 2^40242455 is an apocalyptic number.

40242455 is a deficient number, since it is larger than the sum of its proper divisors (12438649).

40242455 is a wasteful number, since it uses less digits than its factorization.

40242455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731697.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 40242455 is about 6343.6941130543. The cubic root of 40242455 is about 342.6847849375.

Adding to 40242455 its reverse (55424204), we get a palindrome (95666659).

The spelling of 40242455 in words is "forty million, two hundred forty-two thousand, four hundred fifty-five".