1042442421 has 16 divisors (see below), whose sum is σ = 1427543040. Its totient is φ = 676272240.

The previous prime is 1042442419. The next prime is 1042442441. The reversal of 1042442421 is 1242442401.

1042442421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1042442421 - 2¹ = 1042442419 is a prime.

It is a super-2 number, since 2×1042442421² = 2173372402200682482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1042442391 and 1042442400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042442441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20050 + ... + 49868.

It is an arithmetic number, because the mean of its divisors is an integer number (89221440).

Almost surely, 2^1042442421 is an apocalyptic number.

It is an amenable number.

1042442421 is a deficient number, since it is larger than the sum of its proper divisors (385100619).

1042442421 is a wasteful number, since it uses less digits than its factorization.

1042442421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30136.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1042442421 is about 32286.8769161714. The cubic root of 1042442421 is about 1013.9519125296.

Adding to 1042442421 its reverse (1242442401), we get a palindrome (2284884822).

The spelling of 1042442421 in words is "one billion, forty-two million, four hundred forty-two thousand, four hundred twenty-one".