72542343 has 4 divisors (see below), whose sum is σ = 96723128. Its totient is φ = 48361560.

The previous prime is 72542339. The next prime is 72542357. The reversal of 72542343 is 34324527.

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

It is not a de Polignac number, because 72542343 - 2² = 72542339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72542343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72549343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12090388 + ... + 12090393.

It is an arithmetic number, because the mean of its divisors is an integer number (24180782).

Almost surely, 2^72542343 is an apocalyptic number.

72542343 is a deficient number, since it is larger than the sum of its proper divisors (24180785).

72542343 is a wasteful number, since it uses less digits than its factorization.

72542343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24180784.

The product of its digits is 20160, while the sum is 30.

The square root of 72542343 is about 8517.1792865948. The cubic root of 72542343 is about 417.0587073519.

The spelling of 72542343 in words is "seventy-two million, five hundred forty-two thousand, three hundred forty-three".