2142530421 has 8 divisors (see below), whose sum is σ = 3007060320. Its totient is φ = 1353177072.

The previous prime is 2142530419. The next prime is 2142530447. The reversal of 2142530421 is 1240352412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2142530421 - 2¹ = 2142530419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2142530391 and 2142530400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142530491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18794070 + ... + 18794183.

It is an arithmetic number, because the mean of its divisors is an integer number (375882540).

Almost surely, 2^2142530421 is an apocalyptic number.

It is an amenable number.

2142530421 is a deficient number, since it is larger than the sum of its proper divisors (864529899).

2142530421 is a wasteful number, since it uses less digits than its factorization.

2142530421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37588275.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2142530421 is about 46287.4758547061. The cubic root of 2142530421 is about 1289.1664629058.

Adding to 2142530421 its reverse (1240352412), we get a palindrome (3382882833).

The spelling of 2142530421 in words is "two billion, one hundred forty-two million, five hundred thirty thousand, four hundred twenty-one".