2142030521 has 2 divisors, whose sum is σ = 2142030522. Its totient is φ = 2142030520.

The previous prime is 2142030497. The next prime is 2142030547. The reversal of 2142030521 is 1250302412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1936968121 + 205062400 = 44011^2 + 14320^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142030521 - 2¹⁰ = 2142029497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2142030493 and 2142030502.

It is not a weakly prime, because it can be changed into another prime (2142030221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071015260 + 1071015261.

It is an arithmetic number, because the mean of its divisors is an integer number (1071015261).

Almost surely, 2^2142030521 is an apocalyptic number.

It is an amenable number.

2142030521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142030521 is an equidigital number, since it uses as much as digits as its factorization.

2142030521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2142030521 is about 46282.0755908808. The cubic root of 2142030521 is about 1289.0661913707.

Adding to 2142030521 its reverse (1250302412), we get a palindrome (3392332933).

The spelling of 2142030521 in words is "two billion, one hundred forty-two million, thirty thousand, five hundred twenty-one".