2145238342 has 12 divisors (see below), whose sum is σ = 3484426140. Its totient is φ = 990109848.

The previous prime is 2145238307. The next prime is 2145238349. The reversal of 2145238342 is 2438325412.

It is a junction number, because it is equal to n+sod(n) for n = 2145238298 and 2145238307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145238349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3173092 + ... + 3173767.

It is an arithmetic number, because the mean of its divisors is an integer number (290368845).

Almost surely, 2^2145238342 is an apocalyptic number.

2145238342 is a deficient number, since it is larger than the sum of its proper divisors (1339187798).

2145238342 is a wasteful number, since it uses less digits than its factorization.

2145238342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6346887 (or 6346874 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 2145238342 is about 46316.7177377672. The cubic root of 2145238342 is about 1289.7093554292.

The spelling of 2145238342 in words is "two billion, one hundred forty-five million, two hundred thirty-eight thousand, three hundred forty-two".