4252126381 has 8 divisors (see below), whose sum is σ = 4292079480. Its totient is φ = 4212214272.

The previous prime is 4252126349. The next prime is 4252126397. The reversal of 4252126381 is 1836212524.

It can be written as a sum of positive squares in 4 ways, for example, as 22705225 + 4229421156 = 4765^2 + 65034^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4252126381 - 2⁵ = 4252126349 is a prime.

It is a super-2 number, since 2×4252126381² = 36161157519992314322, 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 (4252126301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222825 + ... + 241153.

It is an arithmetic number, because the mean of its divisors is an integer number (536509935).

Almost surely, 2^4252126381 is an apocalyptic number.

It is an amenable number.

4252126381 is a deficient number, since it is larger than the sum of its proper divisors (39953099).

4252126381 is a wasteful number, since it uses less digits than its factorization.

4252126381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20495.

The product of its digits is 23040, while the sum is 34.

The square root of 4252126381 is about 65208.3306104366. The cubic root of 4252126381 is about 1620.0759986955.

The spelling of 4252126381 in words is "four billion, two hundred fifty-two million, one hundred twenty-six thousand, three hundred eighty-one".