1421078 has 8 divisors (see below), whose sum is σ = 2224368. Its totient is φ = 679624.

The previous prime is 1421041. The next prime is 1421083. The reversal of 1421078 is 8701241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15401 + ... + 15492.

It is an arithmetic number, because the mean of its divisors is an integer number (278046).

2^1421078 is an apocalyptic number.

1421078 is a deficient number, since it is larger than the sum of its proper divisors (803290).

1421078 is a wasteful number, since it uses less digits than its factorization.

1421078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30918.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1421078 is about 1192.0897617210. The cubic root of 1421078 is about 112.4275220405.

The spelling of 1421078 in words is "one million, four hundred twenty-one thousand, seventy-eight".