42448940 has 24 divisors (see below), whose sum is σ = 91318752. Its totient is φ = 16565120.

The previous prime is 42448937. The next prime is 42448957. The reversal of 42448940 is 4984424.

42448940 = 2300² + 2301² + ... + 2307².

It is a self number, because there is not a number n which added to its sum of digits gives 42448940.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25064 + ... + 26703.

It is an arithmetic number, because the mean of its divisors is an integer number (3804948).

Almost surely, 2^42448940 is an apocalyptic number.

It is an amenable number.

42448940 is an abundant number, since it is smaller than the sum of its proper divisors (48869812).

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

42448940 is a wasteful number, since it uses less digits than its factorization.

42448940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51817 (or 51815 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 42448940 is about 6515.2851050434. The cubic root of 42448940 is about 348.8367914751.

The spelling of 42448940 in words is "forty-two million, four hundred forty-eight thousand, nine hundred forty".