42356881690 has 8 divisors (see below), whose sum is σ = 76242387060. Its totient is φ = 16942752672.

The previous prime is 42356881669. The next prime is 42356881711. The reversal of 42356881690 is 9618865324.

It is an interprime number because it is at equal distance from previous prime (42356881669) and next prime (42356881711).

It can be written as a sum of positive squares in 2 ways, for example, as 42064779409 + 292102281 = 205097^2 + 17091^2 .

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

It is a super-2 number, since 2×42356881690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2117844075 + ... + 2117844094.

Almost surely, 2^42356881690 is an apocalyptic number.

42356881690 is a deficient number, since it is larger than the sum of its proper divisors (33885505370).

42356881690 is a wasteful number, since it uses less digits than its factorization.

42356881690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235688176.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 42356881690 in words is "forty-two billion, three hundred fifty-six million, eight hundred eighty-one thousand, six hundred ninety".