1042521303 has 4 divisors (see below), whose sum is σ = 1390028408. Its totient is φ = 695014200.

The previous prime is 1042521269. The next prime is 1042521313. The reversal of 1042521303 is 3031252401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3031252401 = 3 ⋅1010417467.

It is not a de Polignac number, because 1042521303 - 2¹² = 1042517207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1042521303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042521313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173753548 + ... + 173753553.

It is an arithmetic number, because the mean of its divisors is an integer number (347507102).

Almost surely, 2^1042521303 is an apocalyptic number.

1042521303 is a deficient number, since it is larger than the sum of its proper divisors (347507105).

1042521303 is an equidigital number, since it uses as much as digits as its factorization.

1042521303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347507104.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1042521303 is about 32288.0984729668. The cubic root of 1042521303 is about 1013.9774872554.

Adding to 1042521303 its reverse (3031252401), we get a palindrome (4073773704).

The spelling of 1042521303 in words is "one billion, forty-two million, five hundred twenty-one thousand, three hundred three".