4001421039 has 16 divisors (see below), whose sum is σ = 6651713280. Its totient is φ = 2078660160.

The previous prime is 4001421037. The next prime is 4001421041. The reversal of 4001421039 is 9301241004.

It is an interprime number because it is at equal distance from previous prime (4001421037) and next prime (4001421041).

It is not a de Polignac number, because 4001421039 - 2¹ = 4001421037 is a prime.

It is a super-2 number, since 2×4001421039² = 32022740662703679042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001421037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8660854 + ... + 8661315.

It is an arithmetic number, because the mean of its divisors is an integer number (415732080).

Almost surely, 2^4001421039 is an apocalyptic number.

4001421039 is a deficient number, since it is larger than the sum of its proper divisors (2650292241).

4001421039 is a wasteful number, since it uses less digits than its factorization.

4001421039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17322190.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 4001421039 is about 63256.7865054810. The cubic root of 4001421039 is about 1587.5890096123.

The spelling of 4001421039 in words is "four billion, one million, four hundred twenty-one thousand, thirty-nine".