74000421 has 24 divisors (see below), whose sum is σ = 122747040. Its totient is φ = 42487200.

The previous prime is 74000417. The next prime is 74000429. The reversal of 74000421 is 12400047.

It is a happy number.

It is not a de Polignac number, because 74000421 - 2² = 74000417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 74000394 and 74000403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74000429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17790 + ... + 21551.

It is an arithmetic number, because the mean of its divisors is an integer number (5114460).

Almost surely, 2^74000421 is an apocalyptic number.

It is an amenable number.

74000421 is a deficient number, since it is larger than the sum of its proper divisors (48746619).

74000421 is a wasteful number, since it uses less digits than its factorization.

74000421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39377 (or 39374 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 74000421 is about 8602.3497371358. The cubic root of 74000421 is about 419.8344415503.

Adding to 74000421 its reverse (12400047), we get a palindrome (86400468).

The spelling of 74000421 in words is "seventy-four million, four hundred twenty-one", and thus it is an aban number.