2145140334 has 24 divisors (see below), whose sum is σ = 4819946040. Its totient is φ = 715046616.

The previous prime is 2145140329. The next prime is 2145140341. The reversal of 2145140334 is 4330415412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2145140298 and 2145140307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2206449 + ... + 2207420.

It is an arithmetic number, because the mean of its divisors is an integer number (200831085).

Almost surely, 2^2145140334 is an apocalyptic number.

2145140334 is an abundant number, since it is smaller than the sum of its proper divisors (2674805706).

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

2145140334 is an equidigital number, since it uses as much as digits as its factorization.

2145140334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4413886 (or 4413874 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2145140334 is about 46315.6597059785. The cubic root of 2145140334 is about 1289.6897144477.

Adding to 2145140334 its reverse (4330415412), we get a palindrome (6475555746).

The spelling of 2145140334 in words is "two billion, one hundred forty-five million, one hundred forty thousand, three hundred thirty-four".