2145511342 has 8 divisors (see below), whose sum is σ = 3465826056. Its totient is φ = 990235992.

The previous prime is 2145511339. The next prime is 2145511349. The reversal of 2145511342 is 2431155412.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2145511342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145511349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41259808 + ... + 41259859.

It is an arithmetic number, because the mean of its divisors is an integer number (433228257).

Almost surely, 2^2145511342 is an apocalyptic number.

2145511342 is a deficient number, since it is larger than the sum of its proper divisors (1320314714).

2145511342 is a wasteful number, since it uses less digits than its factorization.

2145511342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82519682.

The product of its digits is 4800, while the sum is 28.

The square root of 2145511342 is about 46319.6647440372. The cubic root of 2145511342 is about 1289.7640619720.

Adding to 2145511342 its reverse (2431155412), we get a palindrome (4576666754).

The spelling of 2145511342 in words is "two billion, one hundred forty-five million, five hundred eleven thousand, three hundred forty-two".