242975545 has 8 divisors (see below), whose sum is σ = 292408200. Its totient is φ = 193822080.

The previous prime is 242975539. The next prime is 242975549. The reversal of 242975545 is 545579242.

It can be written as a sum of positive squares in 4 ways, for example, as 107765161 + 135210384 = 10381^2 + 11628^2 .

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

It is not a de Polignac number, because 242975545 - 2⁷ = 242975417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242975549) 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, 67876 + ... + 71365.

It is an arithmetic number, because the mean of its divisors is an integer number (36551025).

Almost surely, 2^242975545 is an apocalyptic number.

It is an amenable number.

242975545 is a deficient number, since it is larger than the sum of its proper divisors (49432655).

242975545 is a wasteful number, since it uses less digits than its factorization.

242975545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139595.

The product of its digits is 504000, while the sum is 43.

The square root of 242975545 is about 15587.6728538932. The cubic root of 242975545 is about 624.0042126948.

The spelling of 242975545 in words is "two hundred forty-two million, nine hundred seventy-five thousand, five hundred forty-five".