207407642 has 8 divisors (see below), whose sum is σ = 335043156. Its totient is φ = 95726592.

The previous prime is 207407567. The next prime is 207407653. The reversal of 207407642 is 246704702.

It can be written as a sum of positive squares in 2 ways, for example, as 204747481 + 2660161 = 14309^2 + 1631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 207407599 and 207407608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3988583 + ... + 3988634.

Almost surely, 2^207407642 is an apocalyptic number.

207407642 is a deficient number, since it is larger than the sum of its proper divisors (127635514).

207407642 is a wasteful number, since it uses less digits than its factorization.

207407642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7977232.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 207407642 is about 14401.6541411048. The cubic root of 207407642 is about 591.9362243356.

It can be divided in two parts, 20740 and 7642, that added together give a palindrome (28382).

The spelling of 207407642 in words is "two hundred seven million, four hundred seven thousand, six hundred forty-two".