2150429021 has 4 divisors (see below), whose sum is σ = 2315846652. Its totient is φ = 1985011392.

The previous prime is 2150429009. The next prime is 2150429041. The reversal of 2150429021 is 1209240512.

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 242923396 + 1907505625 = 15586^2 + 43675^2 .

It is not a de Polignac number, because 2150429021 - 2¹⁰ = 2150427997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150429041) 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, 82708796 + ... + 82708821.

It is an arithmetic number, because the mean of its divisors is an integer number (578961663).

Almost surely, 2^2150429021 is an apocalyptic number.

It is an amenable number.

2150429021 is a deficient number, since it is larger than the sum of its proper divisors (165417631).

2150429021 is a wasteful number, since it uses less digits than its factorization.

2150429021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165417630.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 2150429021 is about 46372.7184991348. The cubic root of 2150429021 is about 1290.7487232559.

Adding to 2150429021 its reverse (1209240512), we get a palindrome (3359669533).

The spelling of 2150429021 in words is "two billion, one hundred fifty million, four hundred twenty-nine thousand, twenty-one".