207631242 has 256 divisors, whose sum is σ = 619315200. Its totient is φ = 50077440.

The previous prime is 207631231. The next prime is 207631243. The reversal of 207631242 is 242136702.

207631242 is a `hidden beast` number, since 2 + 0 + 7 + 631 + 24 + 2 = 666.

It is a super-2 number, since 2×207631242² = 86221465308925128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (207631243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4417663 + ... + 4417709.

It is an arithmetic number, because the mean of its divisors is an integer number (2419200).

Almost surely, 2^207631242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207631242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309657600).

207631242 is an abundant number, since it is smaller than the sum of its proper divisors (411683958).

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

207631242 is a wasteful number, since it uses less digits than its factorization.

207631242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 207631242 is about 14409.4150471142. The cubic root of 207631242 is about 592.1488642101.

Adding to 207631242 its reverse (242136702), we get a palindrome (449767944).

The spelling of 207631242 in words is "two hundred seven million, six hundred thirty-one thousand, two hundred forty-two".