1042242440 has 16 divisors (see below), whose sum is σ = 2345045580. Its totient is φ = 416896960.

The previous prime is 1042242431. The next prime is 1042242449. The reversal of 1042242440 is 442422401.

It is an interprime number because it is at equal distance from previous prime (1042242431) and next prime (1042242449).

It can be written as a sum of positive squares in 2 ways, for example, as 1018758724 + 23483716 = 31918^2 + 4846^2 .

It is not an unprimeable number, because it can be changed into a prime (1042242449) 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 in 3 ways as a sum of consecutive naturals, for example, 13027991 + ... + 13028070.

Almost surely, 2^1042242440 is an apocalyptic number.

1042242440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042242440 is an abundant number, since it is smaller than the sum of its proper divisors (1302803140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1042242440 is a wasteful number, since it uses less digits than its factorization.

1042242440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26056072 (or 26056068 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 1042242440 is about 32283.7798282667. The cubic root of 1042242440 is about 1013.8870699122.

Adding to 1042242440 its reverse (442422401), we get a palindrome (1484664841).

The spelling of 1042242440 in words is "one billion, forty-two million, two hundred forty-two thousand, four hundred forty".