138472003 has 4 divisors (see below), whose sum is σ = 138495600. Its totient is φ = 138448408.

The previous prime is 138471973. The next prime is 138472007. The reversal of 138472003 is 300274831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 138472003 - 2¹⁷ = 138340931 is a prime.

It is a super-2 number, since 2×138472003² = 38348991229664018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138472007) 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, 4626 + ... + 17272.

It is an arithmetic number, because the mean of its divisors is an integer number (34623900).

Almost surely, 2^138472003 is an apocalyptic number.

138472003 is a deficient number, since it is larger than the sum of its proper divisors (23597).

138472003 is a wasteful number, since it uses less digits than its factorization.

138472003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23596.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 138472003 is about 11767.4127572717. The cubic root of 138472003 is about 517.3534204882.

The spelling of 138472003 in words is "one hundred thirty-eight million, four hundred seventy-two thousand, three".