74121401 has 4 divisors (see below), whose sum is σ = 75519972. Its totient is φ = 72722832.

The previous prime is 74121371. The next prime is 74121461. The reversal of 74121401 is 10412147.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39075001 + 35046400 = 6251^2 + 5920^2 .

It is a cyclic number.

It is not a de Polignac number, because 74121401 - 2¹⁰ = 74120377 is a prime.

It is a pancake number, because a pancake can be divided into 74121401 parts by 12175 straight cuts.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74121461) 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 3 ways as a sum of consecutive naturals, for example, 699206 + ... + 699311.

It is an arithmetic number, because the mean of its divisors is an integer number (18879993).

Almost surely, 2^74121401 is an apocalyptic number.

It is an amenable number.

74121401 is a deficient number, since it is larger than the sum of its proper divisors (1398571).

74121401 is a wasteful number, since it uses less digits than its factorization.

74121401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398570.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 74121401 is about 8609.3786651535. The cubic root of 74121401 is about 420.0631065417.

Adding to 74121401 its reverse (10412147), we get a palindrome (84533548).

The spelling of 74121401 in words is "seventy-four million, one hundred twenty-one thousand, four hundred one".