72042590330 has 16 divisors (see below), whose sum is σ = 129684140424. Its totient is φ = 28815374400.

The previous prime is 72042590303. The next prime is 72042590353. The reversal of 72042590330 is 3309524027.

It can be written as a sum of positive squares in 4 ways, for example, as 59982377569 + 12060212761 = 244913^2 + 109819^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17321 + ... + 379980.

Almost surely, 2^72042590330 is an apocalyptic number.

72042590330 is a deficient number, since it is larger than the sum of its proper divisors (57641550094).

72042590330 is a wasteful number, since it uses less digits than its factorization.

72042590330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415441.

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 72042590330 in words is "seventy-two billion, forty-two million, five hundred ninety thousand, three hundred thirty".