1042420440 has 64 divisors (see below), whose sum is σ = 3133236960. Its totient is φ = 277447680.

The previous prime is 1042420411. The next prime is 1042420451. The reversal of 1042420440 is 440242401.

It is a congruent number.

It is an unprimeable number.

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, 56892 + ... + 72948.

Almost surely, 2^1042420440 is an apocalyptic number.

1042420440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042420440 is an abundant number, since it is smaller than the sum of its proper divisors (2090816520).

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

1042420440 is a wasteful number, since it uses less digits than its factorization.

1042420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16612 (or 16608 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1042420440 is about 32286.5365129182. The cubic root of 1042420440 is about 1013.9447857303.

Adding to 1042420440 its reverse (440242401), we get a palindrome (1482662841).

The spelling of 1042420440 in words is "one billion, forty-two million, four hundred twenty thousand, four hundred forty".