42521213919 has 8 divisors (see below), whose sum is σ = 57655883520. Its totient is φ = 27867010136.

The previous prime is 42521213897. The next prime is 42521213929. The reversal of 42521213919 is 91931212524.

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 42521213919 - 2¹² = 42521209823 is a prime.

It is a super-2 number, since 2×42521213919² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521213929) 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, 120116247 + ... + 120116600.

It is an arithmetic number, because the mean of its divisors is an integer number (7206985440).

Almost surely, 2^42521213919 is an apocalyptic number.

42521213919 is a deficient number, since it is larger than the sum of its proper divisors (15134669601).

42521213919 is a wasteful number, since it uses less digits than its factorization.

42521213919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240232909.

The product of its digits is 38880, while the sum is 39.

The spelling of 42521213919 in words is "forty-two billion, five hundred twenty-one million, two hundred thirteen thousand, nine hundred nineteen".