42994248 has 64 divisors (see below), whose sum is σ = 118152000. Its totient is φ = 12929280.

The previous prime is 42994247. The next prime is 42994271. The reversal of 42994248 is 84249924.

It is a Cunningham number, because it is equal to 6557²-1.

It is a super-2 number, since 2×42994248² = 3697010722171008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42994247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38790 + ... + 39882.

It is an arithmetic number, because the mean of its divisors is an integer number (1846125).

Almost surely, 2^42994248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42994248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59076000).

42994248 is an abundant number, since it is smaller than the sum of its proper divisors (75157752).

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

42994248 is a wasteful number, since it uses less digits than its factorization.

42994248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262 (or 1258 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 42994248 is about 6556.9999237456. Note that the first 4 decimals coincide. The cubic root of 42994248 is about 350.3241839889.

The spelling of 42994248 in words is "forty-two million, nine hundred ninety-four thousand, two hundred forty-eight".