1355421 has 8 divisors (see below), whose sum is σ = 1856224. Its totient is φ = 879120.

The previous prime is 1355401. The next prime is 1355423. The reversal of 1355421 is 1245531.

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

It is not a de Polignac number, because 1355421 - 2⁶ = 1355357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5995 + ... + 6216.

It is an arithmetic number, because the mean of its divisors is an integer number (232028).

2^1355421 is an apocalyptic number.

It is an amenable number.

1355421 is a deficient number, since it is larger than the sum of its proper divisors (500803).

1355421 is a wasteful number, since it uses less digits than its factorization.

1355421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12251.

The product of its digits is 600, while the sum is 21.

The square root of 1355421 is about 1164.2254936223. The cubic root of 1355421 is about 110.6686817184.

The spelling of 1355421 in words is "one million, three hundred fifty-five thousand, four hundred twenty-one".