1150403021 has 4 divisors (see below), whose sum is σ = 1150945500. Its totient is φ = 1149860544.

The previous prime is 1150403011. The next prime is 1150403027. The reversal of 1150403021 is 1203040511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123520996 + 1026882025 = 11114^2 + 32045^2 .

It is a cyclic number.

It is not a de Polignac number, because 1150403021 - 2¹⁰ = 1150401997 is a prime.

It is a super-2 number, since 2×1150403021² = 2646854221451852882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150403027) 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 3 ways as a sum of consecutive naturals, for example, 268046 + ... + 272303.

It is an arithmetic number, because the mean of its divisors is an integer number (287736375).

Almost surely, 2^1150403021 is an apocalyptic number.

It is an amenable number.

1150403021 is a deficient number, since it is larger than the sum of its proper divisors (542479).

1150403021 is an equidigital number, since it uses as much as digits as its factorization.

1150403021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542478.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1150403021 is about 33917.5916155614. The cubic root of 1150403021 is about 1047.8119275414.

Adding to 1150403021 its reverse (1203040511), we get a palindrome (2353443532).

The spelling of 1150403021 in words is "one billion, one hundred fifty million, four hundred three thousand, twenty-one".