40122923 has 2 divisors, whose sum is σ = 40122924. Its totient is φ = 40122922.

The previous prime is 40122877. The next prime is 40123001. The reversal of 40122923 is 32922104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40122923 is a prime.

It is not a weakly prime, because it can be changed into another prime (40122223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061461 + 20061462.

It is an arithmetic number, because the mean of its divisors is an integer number (20061462).

Almost surely, 2^40122923 is an apocalyptic number.

40122923 is a deficient number, since it is larger than the sum of its proper divisors (1).

40122923 is an equidigital number, since it uses as much as digits as its factorization.

40122923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40122923 is about 6334.2657822355. The cubic root of 40122923 is about 342.3451567099.

The spelling of 40122923 in words is "forty million, one hundred twenty-two thousand, nine hundred twenty-three".