1042103021 has 6 divisors (see below), whose sum is σ = 1089382350. Its totient is φ = 996793688.

The previous prime is 1042103003. The next prime is 1042103057. The reversal of 1042103021 is 1203012401.

It can be written as a sum of positive squares in only one way, i.e., 1010349796 + 31753225 = 31786^2 + 5635^2 .

It is not a de Polignac number, because 1042103021 - 2¹⁴ = 1042086637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1042102987 and 1042103005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042103071) 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 5 ways as a sum of consecutive naturals, for example, 984446 + ... + 985503.

It is an arithmetic number, because the mean of its divisors is an integer number (181563725).

Almost surely, 2^1042103021 is an apocalyptic number.

It is an amenable number.

1042103021 is a deficient number, since it is larger than the sum of its proper divisors (47279329).

1042103021 is an equidigital number, since it uses as much as digits as its factorization.

1042103021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969995 (or 1969972 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1042103021 is about 32281.6204828692. The cubic root of 1042103021 is about 1013.8418592461.

Adding to 1042103021 its reverse (1203012401), we get a palindrome (2245115422).

The spelling of 1042103021 in words is "one billion, forty-two million, one hundred three thousand, twenty-one".