73770121 has 8 divisors (see below), whose sum is σ = 75110400. Its totient is φ = 72440160.

The previous prime is 73770107. The next prime is 73770127. The reversal of 73770121 is 12107737.

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

It is a cyclic number.

It is not a de Polignac number, because 73770121 - 2¹¹ = 73768073 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 73770121.

It is not an unprimeable number, because it can be changed into a prime (73770127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12645 + ... + 17533.

It is an arithmetic number, because the mean of its divisors is an integer number (9388800).

Almost surely, 2^73770121 is an apocalyptic number.

It is an amenable number.

73770121 is a deficient number, since it is larger than the sum of its proper divisors (1340279).

73770121 is a wasteful number, since it uses less digits than its factorization.

73770121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159.

The product of its (nonzero) digits is 2058, while the sum is 28.

The square root of 73770121 is about 8588.9534286780. The cubic root of 73770121 is about 419.3984604817.

Adding to 73770121 its reverse (12107737), we get a palindrome (85877858).

The spelling of 73770121 in words is "seventy-three million, seven hundred seventy thousand, one hundred twenty-one".