7142543105 has 8 divisors (see below), whose sum is σ = 8659413672. Its totient is φ = 5655126528.

The previous prime is 7142543101. The next prime is 7142543123. The reversal of 7142543105 is 5013452417.

It can be written as a sum of positive squares in 4 ways, for example, as 2197078129 + 4945464976 = 46873^2 + 70324^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7142543105 - 2² = 7142543101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7142543101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7362962 + ... + 7363931.

It is an arithmetic number, because the mean of its divisors is an integer number (1082426709).

Almost surely, 2^7142543105 is an apocalyptic number.

It is an amenable number.

7142543105 is a deficient number, since it is larger than the sum of its proper divisors (1516870567).

7142543105 is a wasteful number, since it uses less digits than its factorization.

7142543105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14726995.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 7142543105 is about 84513.5675794130. The cubic root of 7142543105 is about 1925.8285615168.

The spelling of 7142543105 in words is "seven billion, one hundred forty-two million, five hundred forty-three thousand, one hundred five".