387242605 has 8 divisors (see below), whose sum is σ = 484895232. Its totient is φ = 296324688.

The previous prime is 387242561. The next prime is 387242621. The reversal of 387242605 is 506242783.

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

It is a cyclic number.

It is not a de Polignac number, because 387242605 - 2¹⁹ = 386718317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1683549 + ... + 1683778.

It is an arithmetic number, because the mean of its divisors is an integer number (60611904).

Almost surely, 2^387242605 is an apocalyptic number.

It is an amenable number.

387242605 is a deficient number, since it is larger than the sum of its proper divisors (97652627).

387242605 is a wasteful number, since it uses less digits than its factorization.

387242605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367355.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 387242605 is about 19678.4807594489. The cubic root of 387242605 is about 728.8884095431. Note that the first 3 decimals are identical.

The spelling of 387242605 in words is "three hundred eighty-seven million, two hundred forty-two thousand, six hundred five".