2145530542 has 8 divisors (see below), whose sum is σ = 3286770336. Its totient is φ = 1049940432.

The previous prime is 2145530539. The next prime is 2145530557. The reversal of 2145530542 is 2450355412.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11412303 + ... + 11412490.

It is an arithmetic number, because the mean of its divisors is an integer number (410846292).

Almost surely, 2^2145530542 is an apocalyptic number.

2145530542 is a deficient number, since it is larger than the sum of its proper divisors (1141239794).

2145530542 is a wasteful number, since it uses less digits than its factorization.

2145530542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22824842.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 2145530542 is about 46319.8719989596. The cubic root of 2145530542 is about 1289.7679092904.

Adding to 2145530542 its reverse (2450355412), we get a palindrome (4595885954).

The spelling of 2145530542 in words is "two billion, one hundred forty-five million, five hundred thirty thousand, five hundred forty-two".