40122142679 has 2 divisors, whose sum is σ = 40122142680. Its totient is φ = 40122142678.

The previous prime is 40122142649. The next prime is 40122142681. The reversal of 40122142679 is 97624122104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40122142679 - 2³² = 35827175383 is a prime.

Together with 40122142681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40122142649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061071339 + 20061071340.

It is an arithmetic number, because the mean of its divisors is an integer number (20061071340).

Almost surely, 2^40122142679 is an apocalyptic number.

40122142679 is a deficient number, since it is larger than the sum of its proper divisors (1).

40122142679 is an equidigital number, since it uses as much as digits as its factorization.

40122142679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 40122142679 in words is "forty billion, one hundred twenty-two million, one hundred forty-two thousand, six hundred seventy-nine".