2145306542 has 8 divisors (see below), whose sum is σ = 3231424800. Its totient is φ = 1068164944.

The previous prime is 2145306533. The next prime is 2145306563. The reversal of 2145306542 is 2456035412.

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

It is a junction number, because it is equal to n+sod(n) for n = 2145306499 and 2145306508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2243567 + ... + 2244522.

It is an arithmetic number, because the mean of its divisors is an integer number (403928100).

Almost surely, 2^2145306542 is an apocalyptic number.

2145306542 is a deficient number, since it is larger than the sum of its proper divisors (1086118258).

2145306542 is a wasteful number, since it uses less digits than its factorization.

2145306542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4488330.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 2145306542 is about 46317.4539671602. The cubic root of 2145306542 is about 1289.7230224803.

The spelling of 2145306542 in words is "two billion, one hundred forty-five million, three hundred six thousand, five hundred forty-two".