42319998 has 96 divisors (see below), whose sum is σ = 109714176. Its totient is φ = 11539584.

The previous prime is 42319993. The next prime is 42320009. The reversal of 42319998 is 89991324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42319993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 395461 + ... + 395567.

It is an arithmetic number, because the mean of its divisors is an integer number (1142856).

Almost surely, 2^42319998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42319998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54857088).

42319998 is an abundant number, since it is smaller than the sum of its proper divisors (67394178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42319998 is a wasteful number, since it uses less digits than its factorization.

42319998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 235 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 42319998 is about 6505.3822331974. The cubic root of 42319998 is about 348.4832268261.

The spelling of 42319998 in words is "forty-two million, three hundred nineteen thousand, nine hundred ninety-eight".