1620417236242 has 8 divisors (see below), whose sum is σ = 2777858119296.
Its totient is φ = 694464529812.
The previous prime is 1620417236237. The next prime is 1620417236309. The reversal of 1620417236242 is 2426327140261.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a junction number, because it is equal to n+sod(n) for n = 1620417236195 and 1620417236204.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57872044138 + ... + 57872044165.
It is an arithmetic number, because the mean of its divisors is an integer number (347232264912).
Almost surely, 21620417236242 is an apocalyptic number.
1620417236242 is a deficient number, since it is larger than the sum of its proper divisors (1157440883054).
1620417236242 is a wasteful number, since it uses less digits than its factorization.
1620417236242 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 115744088312.
The product of its (nonzero) digits is 193536, while the sum is 40.
The spelling of 1620417236242 in words is "one trillion, six hundred twenty billion, four hundred seventeen million, two hundred thirty-six thousand, two hundred forty-two".