10121749 has 16 divisors (see below), whose sum is σ = 11819520. Its totient is φ = 8565760.

The previous prime is 10121743. The next prime is 10121777. The reversal of 10121749 is 94712101.

It is a cyclic number.

It is not a de Polignac number, because 10121749 - 2⁷ = 10121621 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20892 + ... + 21370.

It is an arithmetic number, because the mean of its divisors is an integer number (738720).

Almost surely, 2^10121749 is an apocalyptic number.

It is an amenable number.

10121749 is a deficient number, since it is larger than the sum of its proper divisors (1697771).

10121749 is a wasteful number, since it uses less digits than its factorization.

10121749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 10121749 is about 3181.4696289608. The cubic root of 10121749 is about 216.3142787299.

The spelling of 10121749 in words is "ten million, one hundred twenty-one thousand, seven hundred forty-nine".