1421088 has 48 divisors (see below), whose sum is σ = 3792096. Its totient is φ = 465920.

The previous prime is 1421083. The next prime is 1421093. The reversal of 1421088 is 8801241.

It is an interprime number because it is at equal distance from previous prime (1421083) and next prime (1421093).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1421088² = 4038982207488, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1421083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10783 + ... + 10913.

It is an arithmetic number, because the mean of its divisors is an integer number (79002).

2^1421088 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 1421088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1896048).

1421088 is an abundant number, since it is smaller than the sum of its proper divisors (2371008).

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

1421088 is a wasteful number, since it uses less digits than its factorization.

1421088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1421088 is about 1192.0939560286. The cubic root of 1421088 is about 112.4277857540.

The spelling of 1421088 in words is "one million, four hundred twenty-one thousand, eighty-eight".