2145440342 has 8 divisors (see below), whose sum is σ = 3228509232. Its totient is φ = 1069270600.

The previous prime is 2145440327. The next prime is 2145440377. The reversal of 2145440342 is 2430445412.

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

It is a super-2 number, since 2×2145440342² = 9205828522162153928, which contains 22 as substring.

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, 1724009 + ... + 1725252.

It is an arithmetic number, because the mean of its divisors is an integer number (403563654).

Almost surely, 2^2145440342 is an apocalyptic number.

2145440342 is a deficient number, since it is larger than the sum of its proper divisors (1083068890).

2145440342 is a wasteful number, since it uses less digits than its factorization.

2145440342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449574.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 2145440342 is about 46318.8983245500. The cubic root of 2145440342 is about 1289.7498347096.

Adding to 2145440342 its reverse (2430445412), we get a palindrome (4575885754).

The spelling of 2145440342 in words is "two billion, one hundred forty-five million, four hundred forty thousand, three hundred forty-two".