74901421 has 16 divisors (see below), whose sum is σ = 87436800. Its totient is φ = 62840448.

The previous prime is 74901361. The next prime is 74901427. The reversal of 74901421 is 12410947.

It is a cyclic number.

It is not a de Polignac number, because 74901421 - 2⁷ = 74901293 is a prime.

It is a super-2 number, since 2×74901421² = 11220445735638482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74901421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74901427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67356 + ... + 68458.

It is an arithmetic number, because the mean of its divisors is an integer number (5464800).

Almost surely, 2^74901421 is an apocalyptic number.

It is an amenable number.

74901421 is a deficient number, since it is larger than the sum of its proper divisors (12535379).

74901421 is a wasteful number, since it uses less digits than its factorization.

74901421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 74901421 is about 8654.5607052005. The cubic root of 74901421 is about 421.5314855321.

It can be divided in two parts, 7490 and 1421, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 74901421 in words is "seventy-four million, nine hundred one thousand, four hundred twenty-one".