42240744 has 192 divisors, whose sum is σ = 147470400. Its totient is φ = 11104128.

The previous prime is 42240727. The next prime is 42240761. The reversal of 42240744 is 44704224.

It is an interprime number because it is at equal distance from previous prime (42240727) and next prime (42240761).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137439 + ... + 137745.

It is an arithmetic number, because the mean of its divisors is an integer number (768075).

Almost surely, 2^42240744 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 42240744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73735200).

42240744 is an abundant number, since it is smaller than the sum of its proper divisors (105229656).

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

42240744 is a wasteful number, since it uses less digits than its factorization.

42240744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 42240744 is about 6499.2879610000. The cubic root of 42240744 is about 348.2655523639.

Adding to 42240744 its reverse (44704224), we get a palindrome (86944968).

The spelling of 42240744 in words is "forty-two million, two hundred forty thousand, seven hundred forty-four".