901012 has 18 divisors (see below), whose sum is σ = 1834602. Its totient is φ = 386064.

The previous prime is 901009. The next prime is 901013. The reversal of 901012 is 210109.

It can be written as a sum of positive squares in only one way, i.e., 571536 + 329476 = 756^2 + 574^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 900983 and 901001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2103 + ... + 2494.

2⁹⁰¹⁰¹² is an apocalyptic number.

It is an amenable number.

901012 is an abundant number, since it is smaller than the sum of its proper divisors (933590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

901012 is a wasteful number, since it uses less digits than its factorization.

901012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615 (or 4606 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 901012 is about 949.2165190303. The cubic root of 901012 is about 96.5851128777.

The spelling of 901012 in words is "nine hundred one thousand, twelve".