1042113021 has 8 divisors (see below), whose sum is σ = 1390037664. Its totient is φ = 694465200.

The previous prime is 1042113013. The next prime is 1042113043. The reversal of 1042113021 is 1203112401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1042113021 - 2³ = 1042113013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042113011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60255 + ... + 75596.

It is an arithmetic number, because the mean of its divisors is an integer number (173754708).

Almost surely, 2^1042113021 is an apocalyptic number.

It is an amenable number.

1042113021 is a deficient number, since it is larger than the sum of its proper divisors (347924643).

1042113021 is a wasteful number, since it uses less digits than its factorization.

1042113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138411.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1042113021 is about 32281.7753693938. The cubic root of 1042113021 is about 1013.8451021712.

Adding to 1042113021 its reverse (1203112401), we get a palindrome (2245225422).

The spelling of 1042113021 in words is "one billion, forty-two million, one hundred thirteen thousand, twenty-one".