2142145434 has 128 divisors (see below), whose sum is σ = 5327659008. Its totient is φ = 564917760.

The previous prime is 2142145417. The next prime is 2142145441. The reversal of 2142145434 is 4345412412.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1439839 + ... + 1441325.

It is an arithmetic number, because the mean of its divisors is an integer number (41622336).

Almost surely, 2^2142145434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2142145434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2663829504).

2142145434 is an abundant number, since it is smaller than the sum of its proper divisors (3185513574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2142145434 is a wasteful number, since it uses less digits than its factorization.

2142145434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612.

The product of its digits is 15360, while the sum is 30.

The square root of 2142145434 is about 46283.3170159616. The cubic root of 2142145434 is about 1289.0892423672.

Adding to 2142145434 its reverse (4345412412), we get a palindrome (6487557846).

The spelling of 2142145434 in words is "two billion, one hundred forty-two million, one hundred forty-five thousand, four hundred thirty-four".