1421172 has 24 divisors (see below), whose sum is σ = 3684800. Its totient is φ = 473688.

The previous prime is 1421159. The next prime is 1421191. The reversal of 1421172 is 2711241.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6472 + ... + 6687.

2^1421172 is an apocalyptic number.

1421172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1421172 is an abundant number, since it is smaller than the sum of its proper divisors (2263628).

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

1421172 is a wasteful number, since it uses less digits than its factorization.

1421172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13172 (or 13164 counting only the distinct ones).

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

The square root of 1421172 is about 1192.1291876303. The cubic root of 1421172 is about 112.4300008990.

The spelling of 1421172 in words is "one million, four hundred twenty-one thousand, one hundred seventy-two".