21030141439 has 16 divisors (see below), whose sum is σ = 22399312320. Its totient is φ = 19708944640.

The previous prime is 21030141427. The next prime is 21030141479. The reversal of 21030141439 is 93414103012.

It is a cyclic number.

It is not a de Polignac number, because 21030141439 - 2¹⁷ = 21030010367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030141409) 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, 189342 + ... + 279124.

It is an arithmetic number, because the mean of its divisors is an integer number (1399957020).

Almost surely, 2^21030141439 is an apocalyptic number.

21030141439 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21030141439 is a deficient number, since it is larger than the sum of its proper divisors (1369170881).

21030141439 is a wasteful number, since it uses less digits than its factorization.

21030141439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90050.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 21030141439 in words is "twenty-one billion, thirty million, one hundred forty-one thousand, four hundred thirty-nine".