421113550 has 48 divisors (see below), whose sum is σ = 920222352. Its totient is φ = 141350400.

The previous prime is 421113547. The next prime is 421113599. The reversal of 421113550 is 55311124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22299 + ... + 36598.

It is an arithmetic number, because the mean of its divisors is an integer number (19171299).

Almost surely, 2^421113550 is an apocalyptic number.

421113550 is an abundant number, since it is smaller than the sum of its proper divisors (499108802).

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

421113550 is a wasteful number, since it uses less digits than its factorization.

421113550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58933 (or 58928 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 421113550 is about 20521.0513863203. The cubic root of 421113550 is about 749.5484986203.

Adding to 421113550 its reverse (55311124), we get a palindrome (476424674).

The spelling of 421113550 in words is "four hundred twenty-one million, one hundred thirteen thousand, five hundred fifty".