1075421 has 8 divisors (see below), whose sum is σ = 1123584. Its totient is φ = 1028160.

The previous prime is 1075409. The next prime is 1075429. The reversal of 1075421 is 1245701.

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

It is a cyclic number.

It is not a de Polignac number, because 1075421 - 2⁶ = 1075357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1075393 and 1075402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1075429) 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, 3350 + ... + 3656.

It is an arithmetic number, because the mean of its divisors is an integer number (140448).

2^1075421 is an apocalyptic number.

It is an amenable number.

1075421 is a deficient number, since it is larger than the sum of its proper divisors (48163).

1075421 is a wasteful number, since it uses less digits than its factorization.

1075421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 1075421 is about 1037.0250720209. The cubic root of 1075421 is about 102.4533517657.

Adding to 1075421 its product of nonzero digits (280), we get a palindrome (1075701).

The spelling of 1075421 in words is "one million, seventy-five thousand, four hundred twenty-one".