40242243451 has 4 divisors (see below), whose sum is σ = 40305024504. Its totient is φ = 40179462400.

The previous prime is 40242243439. The next prime is 40242243469. The reversal of 40242243451 is 15434224204.

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 40242243451 - 2⁷ = 40242243323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40242243491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31389565 + ... + 31390846.

It is an arithmetic number, because the mean of its divisors is an integer number (10076256126).

Almost surely, 2^40242243451 is an apocalyptic number.

40242243451 is a deficient number, since it is larger than the sum of its proper divisors (62781053).

40242243451 is an equidigital number, since it uses as much as digits as its factorization.

40242243451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62781052.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 40242243451 its reverse (15434224204), we get a palindrome (55676467655).

The spelling of 40242243451 in words is "forty billion, two hundred forty-two million, two hundred forty-three thousand, four hundred fifty-one".