2145251342 has 16 divisors (see below), whose sum is σ = 3559067232. Its totient is φ = 963355680.

The previous prime is 2145251327. The next prime is 2145251351. The reversal of 2145251342 is 2431525412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114034 + ... + 1115957.

It is an arithmetic number, because the mean of its divisors is an integer number (222441702).

Almost surely, 2^2145251342 is an apocalyptic number.

2145251342 is a deficient number, since it is larger than the sum of its proper divisors (1413815890).

2145251342 is a wasteful number, since it uses less digits than its factorization.

2145251342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230043.

The product of its digits is 9600, while the sum is 29.

The square root of 2145251342 is about 46316.8580756510. The cubic root of 2145251342 is about 1289.7119606079.

Adding to 2145251342 its reverse (2431525412), we get a palindrome (4576776754).

The spelling of 2145251342 in words is "two billion, one hundred forty-five million, two hundred fifty-one thousand, three hundred forty-two".