4142254121 has 4 divisors (see below), whose sum is σ = 4285090500. Its totient is φ = 3999417744.

The previous prime is 4142254093. The next prime is 4142254133. The reversal of 4142254121 is 1214522414.

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 2158531600 + 1983722521 = 46460^2 + 44539^2 .

It is a cyclic number.

It is not a de Polignac number, because 4142254121 - 2¹⁸ = 4141991977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4142254421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71418146 + ... + 71418203.

It is an arithmetic number, because the mean of its divisors is an integer number (1071272625).

Almost surely, 2^4142254121 is an apocalyptic number.

It is an amenable number.

4142254121 is a deficient number, since it is larger than the sum of its proper divisors (142836379).

4142254121 is a wasteful number, since it uses less digits than its factorization.

4142254121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142836378.

The product of its digits is 2560, while the sum is 26.

The square root of 4142254121 is about 64360.3458738376. The cubic root of 4142254121 is about 1606.0001428071. Note that the first 3 decimals are identical.

Adding to 4142254121 its reverse (1214522414), we get a palindrome (5356776535).

The spelling of 4142254121 in words is "four billion, one hundred forty-two million, two hundred fifty-four thousand, one hundred twenty-one".