427121100 has 360 divisors, whose sum is σ = 1640117248. Its totient is φ = 94478400.

The previous prime is 427121059. The next prime is 427121111. The reversal of 427121100 is 1121724.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 13778085 + ... + 13778115.

Almost surely, 2^427121100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427121100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820058624).

427121100 is an abundant number, since it is smaller than the sum of its proper divisors (1212996148).

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

427121100 is an equidigital number, since it uses as much as digits as its factorization.

427121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 427121100 is about 20666.9083319204. The cubic root of 427121100 is about 753.0960021089.

Adding to 427121100 its reverse (1121724), we get a palindrome (428242824).

The spelling of 427121100 in words is "four hundred twenty-seven million, one hundred twenty-one thousand, one hundred".