3420147121771 has 4 divisors (see below), whose sum is σ = 3420150820632. Its totient is φ = 3420143422912.

The previous prime is 3420147121681. The next prime is 3420147121813. The reversal of 3420147121771 is 1771217410243.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3420147121771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3420147125771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901275 + ... + 2766331.

It is an arithmetic number, because the mean of its divisors is an integer number (855037705158).

Almost surely, 2^{3420147121771} is an apocalyptic number.

3420147121771 is a deficient number, since it is larger than the sum of its proper divisors (3698861).

3420147121771 is a wasteful number, since it uses less digits than its factorization.

3420147121771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3698860.

The product of its (nonzero) digits is 65856, while the sum is 40.

The spelling of 3420147121771 in words is "three trillion, four hundred twenty billion, one hundred forty-seven million, one hundred twenty-one thousand, seven hundred seventy-one".