72140743 has 8 divisors (see below), whose sum is σ = 73127600. Its totient is φ = 71159040.

The previous prime is 72140729. The next prime is 72140767. The reversal of 72140743 is 34704127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72140743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72140773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32788 + ... + 34918.

It is an arithmetic number, because the mean of its divisors is an integer number (9140950).

Almost surely, 2^72140743 is an apocalyptic number.

72140743 is a deficient number, since it is larger than the sum of its proper divisors (986857).

72140743 is a wasteful number, since it uses less digits than its factorization.

72140743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 72140743 is about 8493.5706861131. The cubic root of 72140743 is about 416.2876596912.

The spelling of 72140743 in words is "seventy-two million, one hundred forty thousand, seven hundred forty-three".