73121135 has 8 divisors (see below), whose sum is σ = 87796896. Its totient is φ = 58462560.

The previous prime is 73121129. The next prime is 73121141. The reversal of 73121135 is 53112137.

It is an interprime number because it is at equal distance from previous prime (73121129) and next prime (73121141).

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

It is not a de Polignac number, because 73121135 - 2¹² = 73117039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73121135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8582 + ... + 14828.

It is an arithmetic number, because the mean of its divisors is an integer number (10974612).

Almost surely, 2^73121135 is an apocalyptic number.

73121135 is a deficient number, since it is larger than the sum of its proper divisors (14675761).

73121135 is a wasteful number, since it uses less digits than its factorization.

73121135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8593.

The product of its digits is 630, while the sum is 23.

The square root of 73121135 is about 8551.0896966410. The cubic root of 73121135 is about 418.1649627808.

The spelling of 73121135 in words is "seventy-three million, one hundred twenty-one thousand, one hundred thirty-five".