42290472 has 64 divisors (see below), whose sum is σ = 121766400. Its totient is φ = 11989440.

The previous prime is 42290471. The next prime is 42290473. The reversal of 42290472 is 27409224.

It is an interprime number because it is at equal distance from previous prime (42290471) and next prime (42290473).

It is not an unprimeable number, because it can be changed into a prime (42290471) 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, 22447 + ... + 24257.

It is an arithmetic number, because the mean of its divisors is an integer number (1902600).

Almost surely, 2^42290472 is an apocalyptic number.

42290472 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42290472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60883200).

42290472 is an abundant number, since it is smaller than the sum of its proper divisors (79475928).

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

42290472 is a wasteful number, since it uses less digits than its factorization.

42290472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 42290472 is about 6503.1124855718. The cubic root of 42290472 is about 348.4021642074.

Adding to 42290472 its reverse (27409224), we get a palindrome (69699696).

The spelling of 42290472 in words is "forty-two million, two hundred ninety thousand, four hundred seventy-two".