72045342 has 32 divisors (see below), whose sum is σ = 160469760. Its totient is φ = 23959800.

The previous prime is 72045341. The next prime is 72045377. The reversal of 72045342 is 24354027.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72045341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26967 + ... + 29517.

It is an arithmetic number, because the mean of its divisors is an integer number (5014680).

Almost surely, 2^72045342 is an apocalyptic number.

72045342 is an abundant number, since it is smaller than the sum of its proper divisors (88424418).

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

72045342 is a wasteful number, since it uses less digits than its factorization.

72045342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085 (or 3079 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 72045342 is about 8487.9527567017. The cubic root of 72045342 is about 416.1040751375.

Adding to 72045342 its reverse (24354027), we get a palindrome (96399369).

The spelling of 72045342 in words is "seventy-two million, forty-five thousand, three hundred forty-two".