207904842 has 24 divisors (see below), whose sum is σ = 454012416. Its totient is φ = 68755176.

The previous prime is 207904789. The next prime is 207904847. The reversal of 207904842 is 248409702.

It is a junction number, because it is equal to n+sod(n) for n = 207904797 and 207904806.

It is not an unprimeable number, because it can be changed into a prime (207904847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43188 + ... + 47759.

It is an arithmetic number, because the mean of its divisors is an integer number (18917184).

Almost surely, 2^207904842 is an apocalyptic number.

207904842 is an abundant number, since it is smaller than the sum of its proper divisors (246107574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

207904842 is a wasteful number, since it uses less digits than its factorization.

207904842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91082 (or 91079 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 207904842 is about 14418.9057143738. The cubic root of 207904842 is about 592.4088456682.

The spelling of 207904842 in words is "two hundred seven million, nine hundred four thousand, eight hundred forty-two".