21355424150242 has 96 divisors (see below), whose sum is σ = 42244489526400. Its totient is φ = 8003085576192.

The previous prime is 21355424150239. The next prime is 21355424150257. The reversal of 21355424150242 is 24205142455312.

It is a junction number, because it is equal to n+sod(n) for n = 21355424150195 and 21355424150204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 522078763 + ... + 522119665.

It is an arithmetic number, because the mean of its divisors is an integer number (440046765900).

Almost surely, 2^{21355424150242} is an apocalyptic number.

21355424150242 is a deficient number, since it is larger than the sum of its proper divisors (20889065376158).

21355424150242 is a wasteful number, since it uses less digits than its factorization.

21355424150242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62520 (or 62513 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 21355424150242 in words is "twenty-one trillion, three hundred fifty-five billion, four hundred twenty-four million, one hundred fifty thousand, two hundred forty-two".