1421487 has 12 divisors (see below), whose sum is σ = 2088840. Its totient is φ = 931248.

The previous prime is 1421479. The next prime is 1421501. The reversal of 1421487 is 7841241.

It is not a de Polignac number, because 1421487 - 2³ = 1421479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421417) 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, 808 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (174070).

2^1421487 is an apocalyptic number.

1421487 is a deficient number, since it is larger than the sum of its proper divisors (667353).

1421487 is a wasteful number, since it uses less digits than its factorization.

1421487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742 (or 2739 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 1421487 is about 1192.2612968641. The cubic root of 1421487 is about 112.4383069155.

The spelling of 1421487 in words is "one million, four hundred twenty-one thousand, four hundred eighty-seven".