74002505420 has 24 divisors (see below), whose sum is σ = 155414763504. Its totient is φ = 29599192256.

The previous prime is 74002505417. The next prime is 74002505429. The reversal of 74002505420 is 2450520047.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74002505429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250694 + ... + 459186.

It is an arithmetic number, because the mean of its divisors is an integer number (6475615146).

Almost surely, 2^74002505420 is an apocalyptic number.

It is an amenable number.

74002505420 is an abundant number, since it is smaller than the sum of its proper divisors (81412258084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74002505420 is a wasteful number, since it uses less digits than its factorization.

74002505420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226249 (or 226247 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The spelling of 74002505420 in words is "seventy-four billion, two million, five hundred five thousand, four hundred twenty".