1042420043 has 16 divisors (see below), whose sum is σ = 1233285120. Its totient is φ = 862207200.

The previous prime is 1042420031. The next prime is 1042420081. The reversal of 1042420043 is 3400242401.

It is a cyclic number.

It is not a de Polignac number, because 1042420043 - 2²⁶ = 975311179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1042419997 and 1042420024.

It is not an unprimeable number, because it can be changed into a prime (1042420343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71213 + ... + 84593.

It is an arithmetic number, because the mean of its divisors is an integer number (77080320).

Almost surely, 2^1042420043 is an apocalyptic number.

1042420043 is a deficient number, since it is larger than the sum of its proper divisors (190865077).

1042420043 is a wasteful number, since it uses less digits than its factorization.

1042420043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13778.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1042420043 is about 32286.5303648441. The cubic root of 1042420043 is about 1013.9446570119.

Adding to 1042420043 its reverse (3400242401), we get a palindrome (4442662444).

The spelling of 1042420043 in words is "one billion, forty-two million, four hundred twenty thousand, forty-three".