42374521621 has 8 divisors (see below), whose sum is σ = 42678206144. Its totient is φ = 42071140800.

The previous prime is 42374521603. The next prime is 42374521667. The reversal of 42374521621 is 12612547324.

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 42374521621 - 2¹¹ = 42374519573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42374521121) 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, 207910 + ... + 357736.

It is an arithmetic number, because the mean of its divisors is an integer number (5334775768).

Almost surely, 2^42374521621 is an apocalyptic number.

It is an amenable number.

42374521621 is a deficient number, since it is larger than the sum of its proper divisors (303684523).

42374521621 is a wasteful number, since it uses less digits than its factorization.

42374521621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151851.

The product of its digits is 80640, while the sum is 37.

The spelling of 42374521621 in words is "forty-two billion, three hundred seventy-four million, five hundred twenty-one thousand, six hundred twenty-one".