74261421 has 16 divisors (see below), whose sum is σ = 118480320. Its totient is φ = 45699120.

The previous prime is 74261413. The next prime is 74261437. The reversal of 74261421 is 12416247.

74261421 is a `hidden beast` number, since 7 + 42 + 614 + 2 + 1 = 666.

It is not a de Polignac number, because 74261421 - 2³ = 74261413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74261401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105435 + ... + 106136.

It is an arithmetic number, because the mean of its divisors is an integer number (7405020).

Almost surely, 2^74261421 is an apocalyptic number.

It is an amenable number.

74261421 is a deficient number, since it is larger than the sum of its proper divisors (44218899).

74261421 is a wasteful number, since it uses less digits than its factorization.

74261421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211593 (or 211587 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 74261421 is about 8617.5066579609. The cubic root of 74261421 is about 420.3274487232.

Adding to 74261421 its reverse (12416247), we get a palindrome (86677668).

The spelling of 74261421 in words is "seventy-four million, two hundred sixty-one thousand, four hundred twenty-one".