4342122021 has 4 divisors (see below), whose sum is σ = 5789496032. Its totient is φ = 2894748012.

The previous prime is 4342122019. The next prime is 4342122023. The reversal of 4342122021 is 1202212434.

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 an interprime number because it is at equal distance from previous prime (4342122019) and next prime (4342122023).

It is not a de Polignac number, because 4342122021 - 2¹ = 4342122019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4342122023) 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, 723687001 + ... + 723687006.

It is an arithmetic number, because the mean of its divisors is an integer number (1447374008).

Almost surely, 2^4342122021 is an apocalyptic number.

It is an amenable number.

4342122021 is a deficient number, since it is larger than the sum of its proper divisors (1447374011).

4342122021 is a wasteful number, since it uses less digits than its factorization.

4342122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447374010.

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

The square root of 4342122021 is about 65894.7799222366. The cubic root of 4342122021 is about 1631.4258567505.

Adding to 4342122021 its reverse (1202212434), we get a palindrome (5544334455).

The spelling of 4342122021 in words is "four billion, three hundred forty-two million, one hundred twenty-two thousand, twenty-one".