1012335421 has 4 divisors (see below), whose sum is σ = 1013114844. Its totient is φ = 1011556000.

The previous prime is 1012335403. The next prime is 1012335427. The reversal of 1012335421 is 1245332101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 456036025 + 556299396 = 21355^2 + 23586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012335421 - 2⁷ = 1012335293 is a prime.

It is a super-2 number, since 2×1012335421² = 2049646009222494482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012335392 and 1012335401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012335427) 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, 387760 + ... + 390361.

It is an arithmetic number, because the mean of its divisors is an integer number (253278711).

Almost surely, 2^1012335421 is an apocalyptic number.

It is an amenable number.

1012335421 is a deficient number, since it is larger than the sum of its proper divisors (779423).

1012335421 is an equidigital number, since it uses as much as digits as its factorization.

1012335421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779422.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1012335421 is about 31817.2189388073. The cubic root of 1012335421 is about 1004.0950149625.

Adding to 1012335421 its reverse (1245332101), we get a palindrome (2257667522).

The spelling of 1012335421 in words is "one billion, twelve million, three hundred thirty-five thousand, four hundred twenty-one".