1421686 has 24 divisors (see below), whose sum is σ = 2523960. Its totient is φ = 598752.

The previous prime is 1421677. The next prime is 1421689. The reversal of 1421686 is 6861241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8641 + ... + 8803.

It is an arithmetic number, because the mean of its divisors is an integer number (105165).

2^1421686 is an apocalyptic number.

1421686 is a deficient number, since it is larger than the sum of its proper divisors (1102274).

1421686 is a wasteful number, since it uses less digits than its factorization.

1421686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 261 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 1421686 is about 1192.3447488038. The cubic root of 1421686 is about 112.4435535760.

The spelling of 1421686 in words is "one million, four hundred twenty-one thousand, six hundred eighty-six".