2111145542 has 8 divisors (see below), whose sum is σ = 3454601832. Its totient is φ = 959611600.

The previous prime is 2111145541. The next prime is 2111145557. The reversal of 2111145542 is 2455411112.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111145541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47980559 + ... + 47980602.

It is an arithmetic number, because the mean of its divisors is an integer number (431825229).

Almost surely, 2^2111145542 is an apocalyptic number.

2111145542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2111145542 is a deficient number, since it is larger than the sum of its proper divisors (1343456290).

2111145542 is a wasteful number, since it uses less digits than its factorization.

2111145542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95961174.

The product of its digits is 1600, while the sum is 26.

The square root of 2111145542 is about 45947.2038539888. The cubic root of 2111145542 is about 1282.8406844569.

Adding to 2111145542 its reverse (2455411112), we get a palindrome (4566556654).

The spelling of 2111145542 in words is "two billion, one hundred eleven million, one hundred forty-five thousand, five hundred forty-two".