21030141434 has 16 divisors (see below), whose sum is σ = 32158340928. Its totient is φ = 10312544352.

The previous prime is 21030141427. The next prime is 21030141479. The reversal of 21030141434 is 43414103012.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439622 + ... + 485105.

It is an arithmetic number, because the mean of its divisors is an integer number (2009896308).

Almost surely, 2^21030141434 is an apocalyptic number.

21030141434 is a deficient number, since it is larger than the sum of its proper divisors (11128199494).

21030141434 is a wasteful number, since it uses less digits than its factorization.

21030141434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924949.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21030141434 its reverse (43414103012), we get a palindrome (64444244446).

The spelling of 21030141434 in words is "twenty-one billion, thirty million, one hundred forty-one thousand, four hundred thirty-four".