42597744 has 80 divisors (see below), whose sum is σ = 127158528. Its totient is φ = 12036096.

The previous prime is 42597739. The next prime is 42597749. The reversal of 42597744 is 44779524.

It is an interprime number because it is at equal distance from previous prime (42597739) and next prime (42597749).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 42597696 and 42597705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42597749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31939 + ... + 33245.

Almost surely, 2^42597744 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 42597744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63579264).

42597744 is an abundant number, since it is smaller than the sum of its proper divisors (84560784).

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

42597744 is a wasteful number, since it uses less digits than its factorization.

42597744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422 (or 1416 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 42597744 is about 6526.6947224457. The cubic root of 42597744 is about 349.2439298176.

The spelling of 42597744 in words is "forty-two million, five hundred ninety-seven thousand, seven hundred forty-four".