1421551104 has 80 divisors (see below), whose sum is σ = 3875353152. Its totient is φ = 462809088.

The previous prime is 1421551093. The next prime is 1421551129. The reversal of 1421551104 is 4011551241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55287 + ... + 76809.

Almost surely, 2^1421551104 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 1421551104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1937676576).

1421551104 is an abundant number, since it is smaller than the sum of its proper divisors (2453802048).

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

1421551104 is an equidigital number, since it uses as much as digits as its factorization.

1421551104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21587 (or 21571 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1421551104 is about 37703.4627587441. The cubic root of 1421551104 is about 1124.3999707912.

The spelling of 1421551104 in words is "one billion, four hundred twenty-one million, five hundred fifty-one thousand, one hundred four".