42309744 has 40 divisors (see below), whose sum is σ = 109671552. Its totient is φ = 14055360.

The previous prime is 42309739. The next prime is 42309749. The reversal of 42309744 is 44790324.

It is an interprime number because it is at equal distance from previous prime (42309739) and next prime (42309749).

It is a super-2 number, since 2×42309744² = 3580228874691072, which contains 22 as substring.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14557 + ... + 17219.

Almost surely, 2^42309744 is an apocalyptic number.

It is an amenable number.

42309744 is an abundant number, since it is smaller than the sum of its proper divisors (67361808).

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

42309744 is a wasteful number, since it uses less digits than its factorization.

42309744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005 (or 2999 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 42309744 is about 6504.5940688101. The cubic root of 42309744 is about 348.4550790959.

The spelling of 42309744 in words is "forty-two million, three hundred nine thousand, seven hundred forty-four".