1011421 has 4 divisors (see below), whose sum is σ = 1013472. Its totient is φ = 1009372.

The previous prime is 1011407. The next prime is 1011431. The reversal of 1011421 is 1241101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1241101 = 53 ⋅23417.

It is a cyclic number.

It is not a de Polignac number, because 1011421 - 2¹¹ = 1009373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011398 and 1011407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (253368).

2^1011421 is an apocalyptic number.

It is an amenable number.

1011421 is a deficient number, since it is larger than the sum of its proper divisors (2051).

1011421 is an equidigital number, since it uses as much as digits as its factorization.

1011421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1011421 is about 1005.6942875447. The cubic root of 1011421 is about 100.3792598016.

Adding to 1011421 its reverse (1241101), we get a palindrome (2252522).

The spelling of 1011421 in words is "one million, eleven thousand, four hundred twenty-one".