10121745 has 16 divisors (see below), whose sum is σ = 16470720. Its totient is φ = 5306304.

The previous prime is 10121743. The next prime is 10121777. The reversal of 10121745 is 54712101.

It is a happy number.

It is not a de Polignac number, because 10121745 - 2¹ = 10121743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10121743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4834 + ... + 6603.

It is an arithmetic number, because the mean of its divisors is an integer number (1029420).

Almost surely, 2^10121745 is an apocalyptic number.

10121745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10121745 is a deficient number, since it is larger than the sum of its proper divisors (6348975).

10121745 is a wasteful number, since it uses less digits than its factorization.

10121745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11504.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 10121745 is about 3181.4690003204. The cubic root of 10121745 is about 216.3142502350.

Adding to 10121745 its reverse (54712101), we get a palindrome (64833846).

The spelling of 10121745 in words is "ten million, one hundred twenty-one thousand, seven hundred forty-five".