1292428499 has 2 divisors, whose sum is σ = 1292428500. Its totient is φ = 1292428498.

The previous prime is 1292428433. The next prime is 1292428559. The reversal of 1292428499 is 9948242921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1292428499 - 2⁸ = 1292428243 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1292428999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646214249 + 646214250.

It is an arithmetic number, because the mean of its divisors is an integer number (646214250).

Almost surely, 2^1292428499 is an apocalyptic number.

1292428499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292428499 is an equidigital number, since it uses as much as digits as its factorization.

1292428499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 50.

The square root of 1292428499 is about 35950.3615976251. The cubic root of 1292428499 is about 1089.2699145409.

The spelling of 1292428499 in words is "one billion, two hundred ninety-two million, four hundred twenty-eight thousand, four hundred ninety-nine".