634244121 has 32 divisors (see below), whose sum is σ = 1102887680. Its totient is φ = 352626048.

The previous prime is 634244101. The next prime is 634244137. The reversal of 634244121 is 121442436.

It is a happy number.

634244121 is a `hidden beast` number, since 634 + 2 + 4 + 4 + 1 + 21 = 666.

634244121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 634244121 - 2⁵ = 634244089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634244101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38356 + ... + 52341.

It is an arithmetic number, because the mean of its divisors is an integer number (34465240).

Almost surely, 2^634244121 is an apocalyptic number.

It is an amenable number.

634244121 is a deficient number, since it is larger than the sum of its proper divisors (468643559).

634244121 is a wasteful number, since it uses less digits than its factorization.

634244121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90750 (or 90744 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 634244121 is about 25184.2037992072. The cubic root of 634244121 is about 859.1826202556.

Adding to 634244121 its reverse (121442436), we get a palindrome (755686557).

The spelling of 634244121 in words is "six hundred thirty-four million, two hundred forty-four thousand, one hundred twenty-one".