10120405 has 8 divisors (see below), whose sum is σ = 12237984. Its totient is φ = 8034000.

The previous prime is 10120387. The next prime is 10120421. The reversal of 10120405 is 50402101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10120405 - 2¹⁹ = 9596117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7071 + ... + 8380.

It is an arithmetic number, because the mean of its divisors is an integer number (1529748).

Almost surely, 2^10120405 is an apocalyptic number.

It is an amenable number.

10120405 is a deficient number, since it is larger than the sum of its proper divisors (2117579).

10120405 is a wasteful number, since it uses less digits than its factorization.

10120405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15587.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 10120405 is about 3181.2583988101. The cubic root of 10120405 is about 216.3047039928.

Adding to 10120405 its reverse (50402101), we get a palindrome (60522506).

The spelling of 10120405 in words is "ten million, one hundred twenty thousand, four hundred five".