403142123 has 2 divisors, whose sum is σ = 403142124. Its totient is φ = 403142122.

The previous prime is 403142111. The next prime is 403142161. The reversal of 403142123 is 321241304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 403142123 - 2¹⁴ = 403125739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 403142095 and 403142104.

It is not a weakly prime, because it can be changed into another prime (403102123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201571061 + 201571062.

It is an arithmetic number, because the mean of its divisors is an integer number (201571062).

Almost surely, 2^403142123 is an apocalyptic number.

403142123 is a deficient number, since it is larger than the sum of its proper divisors (1).

403142123 is an equidigital number, since it uses as much as digits as its factorization.

403142123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 403142123 is about 20078.3994132999. The cubic root of 403142123 is about 738.7305499807.

Adding to 403142123 its reverse (321241304), we get a palindrome (724383427).

The spelling of 403142123 in words is "four hundred three million, one hundred forty-two thousand, one hundred twenty-three".