1420406 has 8 divisors (see below), whose sum is σ = 2294544. Its totient is φ = 655560.

The previous prime is 1420403. The next prime is 1420429. The reversal of 1420406 is 6040241.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27290 + ... + 27341.

It is an arithmetic number, because the mean of its divisors is an integer number (286818).

2^1420406 is an apocalyptic number.

1420406 is a deficient number, since it is larger than the sum of its proper divisors (874138).

1420406 is a wasteful number, since it uses less digits than its factorization.

1420406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54646.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1420406 is about 1191.8078704221. The cubic root of 1420406 is about 112.4097976541.

Adding to 1420406 its reverse (6040241), we get a palindrome (7460647).

The spelling of 1420406 in words is "one million, four hundred twenty thousand, four hundred six".