4125749 has 4 divisors (see below), whose sum is σ = 4166700. Its totient is φ = 4084800.

The previous prime is 4125727. The next prime is 4125767. The reversal of 4125749 is 9475214.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3496900 + 628849 = 1870^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 4125749 - 2⁸ = 4125493 is a prime.

It is a super-2 number, since 2×4125749² = 34043609622002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4125769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20324 + ... + 20525.

It is an arithmetic number, because the mean of its divisors is an integer number (1041675).

Almost surely, 2^4125749 is an apocalyptic number.

It is an amenable number.

4125749 is a deficient number, since it is larger than the sum of its proper divisors (40951).

4125749 is a wasteful number, since it uses less digits than its factorization.

4125749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40950.

The product of its digits is 10080, while the sum is 32.

The square root of 4125749 is about 2031.1939838430. The cubic root of 4125749 is about 160.3864227536.

The spelling of 4125749 in words is "four million, one hundred twenty-five thousand, seven hundred forty-nine".