545215142 has 4 divisors (see below), whose sum is σ = 817822716. Its totient is φ = 272607570.

The previous prime is 545215123. The next prime is 545215147. The reversal of 545215142 is 241512545.

545215142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545215147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136303784 + ... + 136303787.

It is an arithmetic number, because the mean of its divisors is an integer number (204455679).

Almost surely, 2^545215142 is an apocalyptic number.

545215142 is a deficient number, since it is larger than the sum of its proper divisors (272607574).

545215142 is a wasteful number, since it uses less digits than its factorization.

545215142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272607573.

The product of its digits is 8000, while the sum is 29.

The square root of 545215142 is about 23349.8424405819. The cubic root of 545215142 is about 816.9383858488.

Adding to 545215142 its reverse (241512545), we get a palindrome (786727687).

The spelling of 545215142 in words is "five hundred forty-five million, two hundred fifteen thousand, one hundred forty-two".