40106123 has 2 divisors, whose sum is σ = 40106124. Its totient is φ = 40106122.

The previous prime is 40106083. The next prime is 40106137. The reversal of 40106123 is 32160104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40106123 - 2²² = 35911819 is a prime.

It is a super-2 number, since 2×40106123² = 3217002204182258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40106023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20053061 + 20053062.

It is an arithmetic number, because the mean of its divisors is an integer number (20053062).

Almost surely, 2^40106123 is an apocalyptic number.

40106123 is a deficient number, since it is larger than the sum of its proper divisors (1).

40106123 is an equidigital number, since it uses as much as digits as its factorization.

40106123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 40106123 is about 6332.9395228440. The cubic root of 40106123 is about 342.2973685536.

Adding to 40106123 its reverse (32160104), we get a palindrome (72266227).

The spelling of 40106123 in words is "forty million, one hundred six thousand, one hundred twenty-three".