74125421 has 8 divisors (see below), whose sum is σ = 78466080. Its totient is φ = 69903792.

The previous prime is 74125409. The next prime is 74125451. The reversal of 74125421 is 12452147.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74125421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74125451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28475 + ... + 30968.

It is an arithmetic number, because the mean of its divisors is an integer number (9808260).

Almost surely, 2^74125421 is an apocalyptic number.

It is an amenable number.

74125421 is a deficient number, since it is larger than the sum of its proper divisors (4340659).

74125421 is a wasteful number, since it uses less digits than its factorization.

74125421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59515.

The product of its digits is 2240, while the sum is 26.

The square root of 74125421 is about 8609.6121283133. The cubic root of 74125421 is about 420.0707004941.

Adding to 74125421 its reverse (12452147), we get a palindrome (86577568).

It can be divided in two parts, 741 and 25421, that added together give a palindrome (26162).

The spelling of 74125421 in words is "seventy-four million, one hundred twenty-five thousand, four hundred twenty-one".