42399112 has 24 divisors (see below), whose sum is σ = 92478510. Its totient is φ = 18170880.

The previous prime is 42399107. The next prime is 42399113. The reversal of 42399112 is 21199324.

It can be written as a sum of positive squares in only one way, i.e., 31203396 + 11195716 = 5586^2 + 3346^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42399113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53689 + ... + 54472.

Almost surely, 2^42399112 is an apocalyptic number.

It is an amenable number.

42399112 is an abundant number, since it is smaller than the sum of its proper divisors (50079398).

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

42399112 is a wasteful number, since it uses less digits than its factorization.

42399112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108181 (or 108170 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 42399112 is about 6511.4600513249. The cubic root of 42399112 is about 348.7002458966.

The spelling of 42399112 in words is "forty-two million, three hundred ninety-nine thousand, one hundred twelve".