74240401 has 4 divisors (see below), whose sum is σ = 75820032. Its totient is φ = 72660772.

The previous prime is 74240399. The next prime is 74240417. The reversal of 74240401 is 10404247.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10404247 = 7 ⋅1486321.

It is a cyclic number.

It is not a de Polignac number, because 74240401 - 2¹ = 74240399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74240431) 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, 789745 + ... + 789838.

It is an arithmetic number, because the mean of its divisors is an integer number (18955008).

Almost surely, 2^74240401 is an apocalyptic number.

It is an amenable number.

74240401 is a deficient number, since it is larger than the sum of its proper divisors (1579631).

74240401 is a wasteful number, since it uses less digits than its factorization.

74240401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579630.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 74240401 is about 8616.2869613308. The cubic root of 74240401 is about 420.2877865110.

Adding to 74240401 its reverse (10404247), we get a palindrome (84644648).

The spelling of 74240401 in words is "seventy-four million, two hundred forty thousand, four hundred one".