72342242 has 16 divisors (see below), whose sum is σ = 131310720. Its totient is φ = 29179968.

The previous prime is 72342241. The next prime is 72342247. The reversal of 72342242 is 24224327.

It is not an unprimeable number, because it can be changed into a prime (72342241) 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, 151742 + ... + 152217.

It is an arithmetic number, because the mean of its divisors is an integer number (8206920).

Almost surely, 2^72342242 is an apocalyptic number.

72342242 is a deficient number, since it is larger than the sum of its proper divisors (58968478).

72342242 is a wasteful number, since it uses less digits than its factorization.

72342242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303985.

The product of its digits is 5376, while the sum is 26.

The square root of 72342242 is about 8505.4242692531. The cubic root of 72342242 is about 416.6748822558.

Adding to 72342242 its reverse (24224327), we get a palindrome (96566569).

The spelling of 72342242 in words is "seventy-two million, three hundred forty-two thousand, two hundred forty-two".