2142121532 has 12 divisors (see below), whose sum is σ = 3749465160. Its totient is φ = 1070845776.

The previous prime is 2142121523. The next prime is 2142121603. The reversal of 2142121532 is 2351212412.

It is a junction number, because it is equal to n+sod(n) for n = 2142121498 and 2142121507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30182 + ... + 72077.

It is an arithmetic number, because the mean of its divisors is an integer number (312455430).

Almost surely, 2^2142121532 is an apocalyptic number.

It is an amenable number.

2142121532 is a deficient number, since it is larger than the sum of its proper divisors (1607343628).

2142121532 is a wasteful number, since it uses less digits than its factorization.

2142121532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107500 (or 107498 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 2142121532 is about 46283.0588012504. The cubic root of 2142121532 is about 1289.0844478086.

Adding to 2142121532 its reverse (2351212412), we get a palindrome (4493333944).

The spelling of 2142121532 in words is "two billion, one hundred forty-two million, one hundred twenty-one thousand, five hundred thirty-two".