1242929 has 2 divisors, whose sum is σ = 1242930. Its totient is φ = 1242928.

The previous prime is 1242893. The next prime is 1242931. The reversal of 1242929 is 9292421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1221025 + 21904 = 1105^2 + 148^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242929 - 2¹² = 1238833 is a prime.

Together with 1242931, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1242959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621464 + 621465.

It is an arithmetic number, because the mean of its divisors is an integer number (621465).

2^1242929 is an apocalyptic number.

It is an amenable number.

1242929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242929 is an equidigital number, since it uses as much as digits as its factorization.

1242929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 1242929 is about 1114.8672566723. The cubic root of 1242929 is about 107.5182301875.

The spelling of 1242929 in words is "one million, two hundred forty-two thousand, nine hundred twenty-nine".