4003742121281 has 4 divisors (see below), whose sum is σ = 4575705281472. Its totient is φ = 3431778961092.

The previous prime is 4003742121271. The next prime is 4003742121283. The reversal of 4003742121281 is 1821212473004.

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 a cyclic number.

It is not a de Polignac number, because 4003742121281 - 2⁶ = 4003742121217 is a prime.

It is a super-2 number, since 2×4003742121281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4003742121283) 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, 285981580085 + ... + 285981580098.

It is an arithmetic number, because the mean of its divisors is an integer number (1143926320368).

Almost surely, 2^{4003742121281} is an apocalyptic number.

It is an amenable number.

4003742121281 is a deficient number, since it is larger than the sum of its proper divisors (571963160191).

4003742121281 is an equidigital number, since it uses as much as digits as its factorization.

4003742121281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571963160190.

The product of its (nonzero) digits is 21504, while the sum is 35.

Adding to 4003742121281 its reverse (1821212473004), we get a palindrome (5824954594285).

The spelling of 4003742121281 in words is "four trillion, three billion, seven hundred forty-two million, one hundred twenty-one thousand, two hundred eighty-one".