40242103991 has 2 divisors, whose sum is σ = 40242103992. Its totient is φ = 40242103990.

The previous prime is 40242103961. The next prime is 40242104009. The reversal of 40242103991 is 19930124204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40242103991 - 2⁶ = 40242103927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40242103931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121051995 + 20121051996.

It is an arithmetic number, because the mean of its divisors is an integer number (20121051996).

Almost surely, 2^40242103991 is an apocalyptic number.

40242103991 is a deficient number, since it is larger than the sum of its proper divisors (1).

40242103991 is an equidigital number, since it uses as much as digits as its factorization.

40242103991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 40242103991 in words is "forty billion, two hundred forty-two million, one hundred three thousand, nine hundred ninety-one".