4087642 has 8 divisors (see below), whose sum is σ = 6603156. Its totient is φ = 1886592.

The previous prime is 4087639. The next prime is 4087661. The reversal of 4087642 is 2467804.

It can be written as a sum of positive squares in 2 ways, for example, as 3876961 + 210681 = 1969^2 + 459^2 .

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

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, 78583 + ... + 78634.

Almost surely, 2^4087642 is an apocalyptic number.

4087642 is a deficient number, since it is larger than the sum of its proper divisors (2515514).

4087642 is a wasteful number, since it uses less digits than its factorization.

4087642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157232.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 4087642 is about 2021.7917795856. The cubic root of 4087642 is about 159.8910977687.

The spelling of 4087642 in words is "four million, eighty-seven thousand, six hundred forty-two".