901120405 has 4 divisors (see below), whose sum is σ = 1081344492. Its totient is φ = 720896320.

The previous prime is 901120379. The next prime is 901120417. The reversal of 901120405 is 504021109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504021109 = 379 ⋅1329871.

It can be written as a sum of positive squares in 2 ways, for example, as 523906321 + 377214084 = 22889^2 + 19422^2 .

It is not a de Polignac number, because 901120405 - 2⁹ = 901119893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90112036 + ... + 90112045.

It is an arithmetic number, because the mean of its divisors is an integer number (270336123).

Almost surely, 2^901120405 is an apocalyptic number.

It is an amenable number.

901120405 is a deficient number, since it is larger than the sum of its proper divisors (180224087).

901120405 is a wasteful number, since it uses less digits than its factorization.

901120405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180224086.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 901120405 is about 30018.6676086731. The cubic root of 901120405 is about 965.8898625910.

The spelling of 901120405 in words is "nine hundred one million, one hundred twenty thousand, four hundred five".