387142503 has 8 divisors (see below), whose sum is σ = 563116416. Its totient is φ = 234631800.

The previous prime is 387142493. The next prime is 387142517. The reversal of 387142503 is 305241783.

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

It is not a de Polignac number, because 387142503 - 2⁵ = 387142471 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 11731591 = 387142503 / (3 + 8 + 7 + 1 + 4 + 2 + 5 + 0 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387142583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5865763 + ... + 5865828.

It is an arithmetic number, because the mean of its divisors is an integer number (70389552).

Almost surely, 2^387142503 is an apocalyptic number.

387142503 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

387142503 is a deficient number, since it is larger than the sum of its proper divisors (175973913).

387142503 is a wasteful number, since it uses less digits than its factorization.

387142503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11731605.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 387142503 is about 19675.9371568421. The cubic root of 387142503 is about 728.8255983798.

The spelling of 387142503 in words is "three hundred eighty-seven million, one hundred forty-two thousand, five hundred three".