72210103 has 4 divisors (see below), whose sum is σ = 82525840. Its totient is φ = 61894368.

The previous prime is 72210077. The next prime is 72210137. The reversal of 72210103 is 30101227.

It is a happy number.

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 72210103 - 2⁵ = 72210071 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 (72210703) 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, 5157858 + ... + 5157871.

It is an arithmetic number, because the mean of its divisors is an integer number (20631460).

Almost surely, 2^72210103 is an apocalyptic number.

72210103 is a deficient number, since it is larger than the sum of its proper divisors (10315737).

72210103 is a wasteful number, since it uses less digits than its factorization.

72210103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10315736.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 72210103 is about 8497.6527935660. The cubic root of 72210103 is about 416.4210307574.

The spelling of 72210103 in words is "seventy-two million, two hundred ten thousand, one hundred three".