42247880 has 32 divisors (see below), whose sum is σ = 95955840. Its totient is φ = 16739520.

The previous prime is 42247861. The next prime is 42247883. The reversal of 42247880 is 8874224.

It is a self number, because there is not a number n which added to its sum of digits gives 42247880.

It is not an unprimeable number, because it can be changed into a prime (42247883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (2998620).

Almost surely, 2^42247880 is an apocalyptic number.

42247880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42247880 is an abundant number, since it is smaller than the sum of its proper divisors (53707960).

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

42247880 is a wasteful number, since it uses less digits than its factorization.

42247880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9989 (or 9985 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The square root of 42247880 is about 6499.8369210312. The cubic root of 42247880 is about 348.2851628380.

The spelling of 42247880 in words is "forty-two million, two hundred forty-seven thousand, eight hundred eighty".