4244142313021 has 16 divisors (see below), whose sum is σ = 4584778320640. Its totient is φ = 3905545533120.

The previous prime is 4244142313001. The next prime is 4244142313079. The reversal of 4244142313021 is 1203132414424.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4244142313021 is a prime.

It is a super-2 number, since 2×4244142313021² (a number of 26 digits) 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 (4244142313001) 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, 6104506 + ... + 6764116.

It is an arithmetic number, because the mean of its divisors is an integer number (286548645040).

Almost surely, 2^{4244142313021} is an apocalyptic number.

It is an amenable number.

4244142313021 is a deficient number, since it is larger than the sum of its proper divisors (340636007619).

4244142313021 is a wasteful number, since it uses less digits than its factorization.

4244142313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661156.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 4244142313021 its reverse (1203132414424), we get a palindrome (5447274727445).

The spelling of 4244142313021 in words is "four trillion, two hundred forty-four billion, one hundred forty-two million, three hundred thirteen thousand, twenty-one".