1042549979 has 2 divisors, whose sum is σ = 1042549980. Its totient is φ = 1042549978.

The previous prime is 1042549967. The next prime is 1042550023. The reversal of 1042549979 is 9799452401.

1042549979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042549979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042549679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521274989 + 521274990.

It is an arithmetic number, because the mean of its divisors is an integer number (521274990).

Almost surely, 2^1042549979 is an apocalyptic number.

1042549979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042549979 is an equidigital number, since it uses as much as digits as its factorization.

1042549979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 1042549979 is about 32288.5425344657. The cubic root of 1042549979 is about 1013.9867841244.

The spelling of 1042549979 in words is "one billion, forty-two million, five hundred forty-nine thousand, nine hundred seventy-nine".