1409421 has 16 divisors (see below), whose sum is σ = 2056320. Its totient is φ = 853440.

The previous prime is 1409407. The next prime is 1409459. The reversal of 1409421 is 1249041.

1409421 = T₉₃ + T₉₄ + ... + T₂₀₉.

It is not a de Polignac number, because 1409421 - 2⁶ = 1409357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1409491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2515 + ... + 3023.

It is an arithmetic number, because the mean of its divisors is an integer number (128520).

2^1409421 is an apocalyptic number.

It is an amenable number.

1409421 is a deficient number, since it is larger than the sum of its proper divisors (646899).

1409421 is a wasteful number, since it uses less digits than its factorization.

1409421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1409421 is about 1187.1903806888. The cubic root of 1409421 is about 112.1192660212.

It can be divided in two parts, 1409 and 421, that added together give a triangular number (1830 = T₆₀).

The spelling of 1409421 in words is "one million, four hundred nine thousand, four hundred twenty-one".