207042545 has 4 divisors (see below), whose sum is σ = 248451060. Its totient is φ = 165634032.

The previous prime is 207042533. The next prime is 207042551. The reversal of 207042545 is 545240702.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 100560784 + 106481761 = 10028^2 + 10319^2 .

It is a cyclic number.

It is not a de Polignac number, because 207042545 - 2⁸ = 207042289 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20704250 + ... + 20704259.

It is an arithmetic number, because the mean of its divisors is an integer number (62112765).

Almost surely, 2^207042545 is an apocalyptic number.

It is an amenable number.

207042545 is a deficient number, since it is larger than the sum of its proper divisors (41408515).

207042545 is an equidigital number, since it uses as much as digits as its factorization.

207042545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41408514.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 207042545 is about 14388.9730349320. The cubic root of 207042545 is about 591.5886944352.

The spelling of 207042545 in words is "two hundred seven million, forty-two thousand, five hundred forty-five".