1010421 has 8 divisors (see below), whose sum is σ = 1496960. Its totient is φ = 673596.

The previous prime is 1010419. The next prime is 1010423. The reversal of 1010421 is 1240101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1010419) and next prime (1010423).

It is not a de Polignac number, because 1010421 - 2¹ = 1010419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010423) 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, 18685 + ... + 18738.

It is an arithmetic number, because the mean of its divisors is an integer number (187120).

2^1010421 is an apocalyptic number.

It is an amenable number.

1010421 is a deficient number, since it is larger than the sum of its proper divisors (486539).

1010421 is an equidigital number, since it uses as much as digits as its factorization.

1010421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37432 (or 37426 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1010421 is about 1005.1969956183. The cubic root of 1010421 is about 100.3461669682.

Adding to 1010421 its reverse (1240101), we get a palindrome (2250522).

It can be divided in two parts, 1010 and 421, that added together give a triangular number (1431 = T₅₃).

The spelling of 1010421 in words is "one million, ten thousand, four hundred twenty-one".