7138903 has 4 divisors (see below), whose sum is σ = 7304968. Its totient is φ = 6972840.

The previous prime is 7138883. The next prime is 7138919. The reversal of 7138903 is 3098317.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7138903 - 2¹⁷ = 7007831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82968 + ... + 83053.

It is an arithmetic number, because the mean of its divisors is an integer number (1826242).

Almost surely, 2^7138903 is an apocalyptic number.

7138903 is a deficient number, since it is larger than the sum of its proper divisors (166065).

7138903 is a wasteful number, since it uses less digits than its factorization.

7138903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166064.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 7138903 is about 2671.8725643264. The cubic root of 7138903 is about 192.5501348025.

The spelling of 7138903 in words is "seven million, one hundred thirty-eight thousand, nine hundred three".