1042219987 has 2 divisors, whose sum is σ = 1042219988. Its totient is φ = 1042219986.

The previous prime is 1042219973. The next prime is 1042220027. The reversal of 1042219987 is 7899122401.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042219987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042217987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521109993 + 521109994.

It is an arithmetic number, because the mean of its divisors is an integer number (521109994).

Almost surely, 2^1042219987 is an apocalyptic number.

1042219987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042219987 is an equidigital number, since it uses as much as digits as its factorization.

1042219987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1042219987 is about 32283.4320821068. The cubic root of 1042219987 is about 1013.8797891462.

The spelling of 1042219987 in words is "one billion, forty-two million, two hundred nineteen thousand, nine hundred eighty-seven".