72415242 has 16 divisors (see below), whose sum is σ = 160922880. Its totient is φ = 24138396.

The previous prime is 72415241. The next prime is 72415249. The reversal of 72415242 is 24251427.

72415242 is a `hidden beast` number, since 7 + 2 + 415 + 242 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (72415241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670458 + ... + 670565.

It is an arithmetic number, because the mean of its divisors is an integer number (10057680).

Almost surely, 2^72415242 is an apocalyptic number.

72415242 is an abundant number, since it is smaller than the sum of its proper divisors (88507638).

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

72415242 is a wasteful number, since it uses less digits than its factorization.

72415242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341034 (or 1341028 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 72415242 is about 8509.7145663060. The cubic root of 72415242 is about 416.8149896122.

Adding to 72415242 its reverse (24251427), we get a palindrome (96666669).

The spelling of 72415242 in words is "seventy-two million, four hundred fifteen thousand, two hundred forty-two".