74248121 has 4 divisors (see below), whose sum is σ = 74265744. Its totient is φ = 74230500.

The previous prime is 74248103. The next prime is 74248123. The reversal of 74248121 is 12184247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74248121 - 2¹⁰ = 74247097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74248123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646 + ... + 12296.

It is an arithmetic number, because the mean of its divisors is an integer number (18566436).

Almost surely, 2^74248121 is an apocalyptic number.

It is an amenable number.

74248121 is a deficient number, since it is larger than the sum of its proper divisors (17623).

74248121 is a wasteful number, since it uses less digits than its factorization.

74248121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17622.

The product of its digits is 3584, while the sum is 29.

The square root of 74248121 is about 8616.7349384787. The cubic root of 74248121 is about 420.3023540924.

The spelling of 74248121 in words is "seventy-four million, two hundred forty-eight thousand, one hundred twenty-one".