1012884421 has 12 divisors (see below), whose sum is σ = 1082882944. Its totient is φ = 946386000.

The previous prime is 1012884409. The next prime is 1012884437. The reversal of 1012884421 is 1244882101.

It is not a de Polignac number, because 1012884421 - 2¹³ = 1012876229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012884461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6646 + ... + 45496.

Almost surely, 2^1012884421 is an apocalyptic number.

It is an amenable number.

1012884421 is a deficient number, since it is larger than the sum of its proper divisors (69998523).

1012884421 is an equidigital number, since it uses as much as digits as its factorization.

1012884421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38940 (or 38911 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 1012884421 is about 31825.8451733807. The cubic root of 1012884421 is about 1004.2764925415.

It can be divided in two parts, 10128 and 84421, that added together give a palindrome (94549).

The spelling of 1012884421 in words is "one billion, twelve million, eight hundred eighty-four thousand, four hundred twenty-one".