72126303 has 4 divisors (see below), whose sum is σ = 96168408. Its totient is φ = 48084200.

The previous prime is 72126293. The next prime is 72126317. The reversal of 72126303 is 30362127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30362127 = 3 ⋅10120709.

It is a cyclic number.

It is not a de Polignac number, because 72126303 - 2⁴ = 72126287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72126403) 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, 12021048 + ... + 12021053.

It is an arithmetic number, because the mean of its divisors is an integer number (24042102).

Almost surely, 2^72126303 is an apocalyptic number.

72126303 is a deficient number, since it is larger than the sum of its proper divisors (24042105).

72126303 is a wasteful number, since it uses less digits than its factorization.

72126303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24042104.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 72126303 is about 8492.7205888337. The cubic root of 72126303 is about 416.2598825310.

The spelling of 72126303 in words is "seventy-two million, one hundred twenty-six thousand, three hundred three".