1040520203 has 4 divisors (see below), whose sum is σ = 1076400240. Its totient is φ = 1004640168.

The previous prime is 1040520157. The next prime is 1040520211. The reversal of 1040520203 is 3020250401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3020250401 = 7 ⋅431464343.

It is a cyclic number.

It is not a de Polignac number, because 1040520203 - 2¹⁸ = 1040258059 is a prime.

It is a super-2 number, since 2×1040520203² = 2165364585702322418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040520703) 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, 17939975 + ... + 17940032.

It is an arithmetic number, because the mean of its divisors is an integer number (269100060).

Almost surely, 2^1040520203 is an apocalyptic number.

1040520203 is a deficient number, since it is larger than the sum of its proper divisors (35880037).

1040520203 is an equidigital number, since it uses as much as digits as its factorization.

1040520203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35880036.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1040520203 is about 32257.0953900068. The cubic root of 1040520203 is about 1013.3283014837.

Adding to 1040520203 its reverse (3020250401), we get a palindrome (4060770604).

The spelling of 1040520203 in words is "one billion, forty million, five hundred twenty thousand, two hundred three".