72003542 has 16 divisors (see below), whose sum is σ = 116484480. Its totient is φ = 33183552.

The previous prime is 72003527. The next prime is 72003563. The reversal of 72003542 is 24530027.

It is a congruent 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, 20834 + ... + 24042.

It is an arithmetic number, because the mean of its divisors is an integer number (7280280).

Almost surely, 2^72003542 is an apocalyptic number.

72003542 is a deficient number, since it is larger than the sum of its proper divisors (44480938).

72003542 is a wasteful number, since it uses less digits than its factorization.

72003542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 72003542 is about 8485.4900860233. The cubic root of 72003542 is about 416.0235864031.

Adding to 72003542 its reverse (24530027), we get a palindrome (96533569).

The spelling of 72003542 in words is "seventy-two million, three thousand, five hundred forty-two".