426240072 has 96 divisors (see below), whose sum is σ = 1235988000. Its totient is φ = 132295680.

The previous prime is 426240047. The next prime is 426240079. The reversal of 426240072 is 270042624.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (426240079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78072 + ... + 83352.

It is an arithmetic number, because the mean of its divisors is an integer number (12874875).

Almost surely, 2^426240072 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 426240072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (617994000).

426240072 is an abundant number, since it is smaller than the sum of its proper divisors (809747928).

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

426240072 is a wasteful number, since it uses less digits than its factorization.

426240072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5371 (or 5364 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 426240072 is about 20645.5823846168. The cubic root of 426240072 is about 752.5778388445.

Adding to 426240072 its reverse (270042624), we get a palindrome (696282696).

The spelling of 426240072 in words is "four hundred twenty-six million, two hundred forty thousand, seventy-two".