21342342030 has 32 divisors (see below), whose sum is σ = 51239260800. Its totient is φ = 5689331232.

The previous prime is 21342342023. The next prime is 21342342037. The reversal of 21342342030 is 3024324312.

It is an interprime number because it is at equal distance from previous prime (21342342023) and next prime (21342342037).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342342037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32860 + ... + 209199.

It is an arithmetic number, because the mean of its divisors is an integer number (1601226900).

Almost surely, 2^21342342030 is an apocalyptic number.

21342342030 is an abundant number, since it is smaller than the sum of its proper divisors (29896918770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21342342030 is a wasteful number, since it uses less digits than its factorization.

21342342030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245008.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 21342342030 its reverse (3024324312), we get a palindrome (24366666342).

The spelling of 21342342030 in words is "twenty-one billion, three hundred forty-two million, three hundred forty-two thousand, thirty".