42151205321 has 4 divisors (see below), whose sum is σ = 42237758592. Its totient is φ = 42064652052.

The previous prime is 42151205297. The next prime is 42151205353. The reversal of 42151205321 is 12350215124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42151205321 is a prime.

It is a super-2 number, since 2×42151205321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42151205381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43275905 + ... + 43276878.

It is an arithmetic number, because the mean of its divisors is an integer number (10559439648).

Almost surely, 2^42151205321 is an apocalyptic number.

It is an amenable number.

42151205321 is a deficient number, since it is larger than the sum of its proper divisors (86553271).

42151205321 is an equidigital number, since it uses as much as digits as its factorization.

42151205321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86553270.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 42151205321 in words is "forty-two billion, one hundred fifty-one million, two hundred five thousand, three hundred twenty-one".