72453542 has 32 divisors (see below), whose sum is σ = 134092800. Its totient is φ = 28673568.

The previous prime is 72453533. The next prime is 72453569. The reversal of 72453542 is 24535427.

It is a junction number, because it is equal to n+sod(n) for n = 72453499 and 72453508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5459 + ... + 13217.

It is an arithmetic number, because the mean of its divisors is an integer number (4190400).

Almost surely, 2^72453542 is an apocalyptic number.

72453542 is a deficient number, since it is larger than the sum of its proper divisors (61639258).

72453542 is a wasteful number, since it uses less digits than its factorization.

72453542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7820.

The product of its digits is 33600, while the sum is 32.

The square root of 72453542 is about 8511.9646380844. The cubic root of 72453542 is about 416.8884603350. Note that the first 3 decimals are identical.

Adding to 72453542 its reverse (24535427), we get a palindrome (96988969).

The spelling of 72453542 in words is "seventy-two million, four hundred fifty-three thousand, five hundred forty-two".