207942445 has 4 divisors (see below), whose sum is σ = 249530940. Its totient is φ = 166353952.

The previous prime is 207942433. The next prime is 207942509. The reversal of 207942445 is 544249702.

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 128981449 + 78960996 = 11357^2 + 8886^2 .

It is a cyclic number.

It is not a de Polignac number, because 207942445 - 2¹³ = 207934253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20794240 + ... + 20794249.

It is an arithmetic number, because the mean of its divisors is an integer number (62382735).

Almost surely, 2^207942445 is an apocalyptic number.

It is an amenable number.

207942445 is a deficient number, since it is larger than the sum of its proper divisors (41588495).

207942445 is an equidigital number, since it uses as much as digits as its factorization.

207942445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41588494.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 207942445 is about 14420.2096031923. The cubic root of 207942445 is about 592.4445591333. Note that the first 3 decimals are identical.

The spelling of 207942445 in words is "two hundred seven million, nine hundred forty-two thousand, four hundred forty-five".