72937042 has 4 divisors (see below), whose sum is σ = 109405566. Its totient is φ = 36468520.

The previous prime is 72937009. The next prime is 72937043. The reversal of 72937042 is 24073927.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43441281 + 29495761 = 6591^2 + 5431^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72936989 and 72937007.

It is not an unprimeable number, because it can be changed into a prime (72937043) 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 as a sum of consecutive naturals, namely, 18234259 + ... + 18234262.

Almost surely, 2^72937042 is an apocalyptic number.

72937042 is a deficient number, since it is larger than the sum of its proper divisors (36468524).

72937042 is a wasteful number, since it uses less digits than its factorization.

72937042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36468523.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 72937042 is about 8540.3186123235. The cubic root of 72937042 is about 417.8137376674.

The spelling of 72937042 in words is "seventy-two million, nine hundred thirty-seven thousand, forty-two".