21733402417242 has 32 divisors (see below), whose sum is σ = 46268627284800. Its totient is φ = 6786065328768.

The previous prime is 21733402417241. The next prime is 21733402417247. The reversal of 21733402417242 is 24271420433712.

It is a junction number, because it is equal to n+sod(n) for n = 21733402417194 and 21733402417203.

It is not an unprimeable number, because it can be changed into a prime (21733402417241) 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, 1071022893 + ... + 1071043184.

It is an arithmetic number, because the mean of its divisors is an integer number (1445894602650).

Almost surely, 2^{21733402417242} is an apocalyptic number.

21733402417242 is an abundant number, since it is smaller than the sum of its proper divisors (24535224867558).

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

21733402417242 is a wasteful number, since it uses less digits than its factorization.

21733402417242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142066190.

The product of its (nonzero) digits is 451584, while the sum is 42.

The spelling of 21733402417242 in words is "twenty-one trillion, seven hundred thirty-three billion, four hundred two million, four hundred seventeen thousand, two hundred forty-two".