42309748 has 24 divisors (see below), whose sum is σ = 80706528. Its totient is φ = 19290336.

The previous prime is 42309739. The next prime is 42309749. The reversal of 42309748 is 84790324.

It is a happy number.

It is a super-2 number, since 2×42309748² = 3580229551647008, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42309749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586 + ... + 9217.

It is an arithmetic number, because the mean of its divisors is an integer number (3362772).

Almost surely, 2^42309748 is an apocalyptic number.

It is an amenable number.

42309748 is a deficient number, since it is larger than the sum of its proper divisors (38396780).

42309748 is a wasteful number, since it uses less digits than its factorization.

42309748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9903 (or 9901 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 42309748 is about 6504.5943762851. The cubic root of 42309748 is about 348.4550900770.

The spelling of 42309748 in words is "forty-two million, three hundred nine thousand, seven hundred forty-eight".