2142923 has 2 divisors, whose sum is σ = 2142924. Its totient is φ = 2142922.

The previous prime is 2142911. The next prime is 2142941. The reversal of 2142923 is 3292412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2142923 - 2⁸ = 2142667 is a prime.

It is a super-4 number, since 4×2142923⁴ (a number of 26 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2142523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071461 + 1071462.

It is an arithmetic number, because the mean of its divisors is an integer number (1071462).

2^2142923 is an apocalyptic number.

2142923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142923 is an equidigital number, since it uses as much as digits as its factorization.

2142923 is an evil number, because the sum of its binary digits is even.

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

The square root of 2142923 is about 1463.8726037467. The cubic root of 2142923 is about 128.9245196719.

It can be divided in two parts, 2142 and 923, that multiplied together give a triangular number (1977066 = T₁₉₈₈).

The spelling of 2142923 in words is "two million, one hundred forty-two thousand, nine hundred twenty-three".