42355102521 has 8 divisors (see below), whose sum is σ = 57850871904. Its totient is φ = 27548034080.

The previous prime is 42355102507. The next prime is 42355102541. The reversal of 42355102521 is 12520155324.

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 42355102521 - 2²⁷ = 42220884793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42355102541) 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, 172175091 + ... + 172175336.

It is an arithmetic number, because the mean of its divisors is an integer number (7231358988).

Almost surely, 2^42355102521 is an apocalyptic number.

42355102521 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42355102521 is a deficient number, since it is larger than the sum of its proper divisors (15495769383).

42355102521 is a wasteful number, since it uses less digits than its factorization.

42355102521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344350471.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 42355102521 its reverse (12520155324), we get a palindrome (54875257845).

The spelling of 42355102521 in words is "forty-two billion, three hundred fifty-five million, one hundred two thousand, five hundred twenty-one".