2142110421 has 16 divisors (see below), whose sum is σ = 3461997120. Its totient is φ = 1298248560.

The previous prime is 2142110419. The next prime is 2142110423. The reversal of 2142110421 is 1240112412.

2142110421 is a `hidden beast` number, since 214 + 21 + 10 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (2142110419) and next prime (2142110423).

It is not a de Polignac number, because 2142110421 - 2¹ = 2142110419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2142110394 and 2142110403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142110423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3605950 + ... + 3606543.

It is an arithmetic number, because the mean of its divisors is an integer number (216374820).

Almost surely, 2^2142110421 is an apocalyptic number.

It is an amenable number.

2142110421 is a deficient number, since it is larger than the sum of its proper divisors (1319886699).

2142110421 is a wasteful number, since it uses less digits than its factorization.

2142110421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7212513 (or 7212507 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2142110421 is about 46282.9387679737. The cubic root of 2142110421 is about 1289.0822190147.

Adding to 2142110421 its reverse (1240112412), we get a palindrome (3382222833).

The spelling of 2142110421 in words is "two billion, one hundred forty-two million, one hundred ten thousand, four hundred twenty-one".