40242079 has 2 divisors, whose sum is σ = 40242080. Its totient is φ = 40242078.

The previous prime is 40241989. The next prime is 40242113. The reversal of 40242079 is 97024204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40242079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40243079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121039 + 20121040.

It is an arithmetic number, because the mean of its divisors is an integer number (20121040).

Almost surely, 2^40242079 is an apocalyptic number.

40242079 is a deficient number, since it is larger than the sum of its proper divisors (1).

40242079 is an equidigital number, since it uses as much as digits as its factorization.

40242079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 40242079 is about 6343.6644772560. The cubic root of 40242079 is about 342.6837176577.

The spelling of 40242079 in words is "forty million, two hundred forty-two thousand, seventy-nine".