207042407 has 12 divisors (see below), whose sum is σ = 244577304. Its totient is φ = 173740320.

The previous prime is 207042403. The next prime is 207042419. The reversal of 207042407 is 704240702.

It is not a de Polignac number, because 207042407 - 2² = 207042403 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207042401) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 53828 + ... + 57545.

It is an arithmetic number, because the mean of its divisors is an integer number (20381442).

Almost surely, 2^207042407 is an apocalyptic number.

207042407 is a deficient number, since it is larger than the sum of its proper divisors (37534897).

207042407 is a wasteful number, since it uses less digits than its factorization.

207042407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111410 (or 111397 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 207042407 is about 14388.9682395924. The cubic root of 207042407 is about 591.5885629981.

The spelling of 207042407 in words is "two hundred seven million, forty-two thousand, four hundred seven".