7421405550 has 48 divisors (see below), whose sum is σ = 19820866800. Its totient is φ = 1826807040.

The previous prime is 7421405527. The next prime is 7421405587. The reversal of 7421405550 is 555041247.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1900975 + ... + 1904874.

It is an arithmetic number, because the mean of its divisors is an integer number (412934725).

Almost surely, 2^7421405550 is an apocalyptic number.

7421405550 is an abundant number, since it is smaller than the sum of its proper divisors (12399461250).

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

7421405550 is a wasteful number, since it uses less digits than its factorization.

7421405550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3805877 (or 3805872 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 7421405550 is about 86147.5800588734. The cubic root of 7421405550 is about 1950.5723106471.

Adding to 7421405550 its reverse (555041247), we get a palindrome (7976446797).

The spelling of 7421405550 in words is "seven billion, four hundred twenty-one million, four hundred five thousand, five hundred fifty".