4200434121 has 16 divisors (see below), whose sum is σ = 6099166080. Its totient is φ = 2555836800.

The previous prime is 4200434113. The next prime is 4200434131. The reversal of 4200434121 is 1214340024.

It is not a de Polignac number, because 4200434121 - 2³ = 4200434113 is a prime.

It is a super-2 number, since 2×4200434121² = 35287293609722085282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4200434131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601605 + ... + 608546.

It is an arithmetic number, because the mean of its divisors is an integer number (381197880).

Almost surely, 2^4200434121 is an apocalyptic number.

It is an amenable number.

4200434121 is a deficient number, since it is larger than the sum of its proper divisors (1898731959).

4200434121 is a wasteful number, since it uses less digits than its factorization.

4200434121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210256.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4200434121 is about 64810.7562137644. The cubic root of 4200434121 is about 1613.4842332568.

Adding to 4200434121 its reverse (1214340024), we get a palindrome (5414774145).

The spelling of 4200434121 in words is "four billion, two hundred million, four hundred thirty-four thousand, one hundred twenty-one".