7642142116621 has 8 divisors (see below), whose sum is σ = 7653269505024. Its totient is φ = 7631015372400.

The previous prime is 7642142116619. The next prime is 7642142116657. The reversal of 7642142116621 is 1266112412467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7642142116621 - 2¹ = 7642142116619 is a prime.

It is a super-2 number, since 2×7642142116621² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7642142126621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26877220 + ... + 27160066.

It is an arithmetic number, because the mean of its divisors is an integer number (956658688128).

Almost surely, 2^{7642142116621} is an apocalyptic number.

It is an amenable number.

7642142116621 is a deficient number, since it is larger than the sum of its proper divisors (11127388403).

7642142116621 is a wasteful number, since it uses less digits than its factorization.

7642142116621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322091.

The product of its digits is 193536, while the sum is 43.

The spelling of 7642142116621 in words is "seven trillion, six hundred forty-two billion, one hundred forty-two million, one hundred sixteen thousand, six hundred twenty-one".