4912129 has 4 divisors (see below), whose sum is σ = 4918576. Its totient is φ = 4905684.

The previous prime is 4912091. The next prime is 4912151. The reversal of 4912129 is 9212194.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4912129 - 2⁹ = 4911617 is a prime.

It is a super-2 number, since 2×4912129² = 48258022625282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4912097 and 4912106.

It is not an unprimeable number, because it can be changed into a prime (4912529) 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, 1899 + ... + 3664.

It is an arithmetic number, because the mean of its divisors is an integer number (1229644).

Almost surely, 2^4912129 is an apocalyptic number.

It is an amenable number.

4912129 is a deficient number, since it is larger than the sum of its proper divisors (6447).

4912129 is an equidigital number, since it uses as much as digits as its factorization.

4912129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446.

The product of its digits is 1296, while the sum is 28.

The square root of 4912129 is about 2216.3323306761. The cubic root of 4912129 is about 169.9899532702.

It can be divided in two parts, 4912 and 129, that added together give a square (5041 = 71²).

The spelling of 4912129 in words is "four million, nine hundred twelve thousand, one hundred twenty-nine".