42245340 has 96 divisors (see below), whose sum is σ = 127008000. Its totient is φ = 10454016.

The previous prime is 42245321. The next prime is 42245351. The reversal of 42245340 is 4354224.

It is a self number, because there is not a number n which added to its sum of digits gives 42245340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84411 + ... + 84909.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^42245340 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 42245340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63504000).

42245340 is an abundant number, since it is smaller than the sum of its proper divisors (84762660).

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

42245340 is a wasteful number, since it uses less digits than its factorization.

42245340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 42245340 is about 6499.6415285768. The cubic root of 42245340 is about 348.2781829055.

Adding to 42245340 its reverse (4354224), we get a palindrome (46599564).

The spelling of 42245340 in words is "forty-two million, two hundred forty-five thousand, three hundred forty".