1042450521 has 16 divisors (see below), whose sum is σ = 1612207104. Its totient is φ = 586794384.

The previous prime is 1042450483. The next prime is 1042450529. The reversal of 1042450521 is 1250542401.

It is not a de Polignac number, because 1042450521 - 2¹⁴ = 1042434137 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1042450491 and 1042450500.

It is not an unprimeable number, because it can be changed into a prime (1042450529) by changing a digit.

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, 369045 + ... + 371858.

It is an arithmetic number, because the mean of its divisors is an integer number (100762944).

Almost surely, 2^1042450521 is an apocalyptic number.

It is an amenable number.

1042450521 is a deficient number, since it is larger than the sum of its proper divisors (569756583).

1042450521 is an equidigital number, since it uses as much as digits as its factorization.

1042450521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740980.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1042450521 is about 32287.0023538885. The cubic root of 1042450521 is about 1013.9545387303.

Adding to 1042450521 its reverse (1250542401), we get a palindrome (2292992922).

The spelling of 1042450521 in words is "one billion, forty-two million, four hundred fifty thousand, five hundred twenty-one".