10142749 has 8 divisors (see below), whose sum is σ = 10365120. Its totient is φ = 9922176.

The previous prime is 10142687. The next prime is 10142753. The reversal of 10142749 is 94724101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10142749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10142449) 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 7 ways as a sum of consecutive naturals, for example, 20584 + ... + 21070.

It is an arithmetic number, because the mean of its divisors is an integer number (1295640).

Almost surely, 2^10142749 is an apocalyptic number.

It is an amenable number.

10142749 is a deficient number, since it is larger than the sum of its proper divisors (222371).

10142749 is an equidigital number, since it uses as much as digits as its factorization.

10142749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 10142749 is about 3184.7682804248. The cubic root of 10142749 is about 216.4637740361.

The spelling of 10142749 in words is "ten million, one hundred forty-two thousand, seven hundred forty-nine".