72743143 has 32 divisors (see below), whose sum is σ = 86575104. Its totient is φ = 60984000.

The previous prime is 72743137. The next prime is 72743149. The reversal of 72743143 is 34134727.

It is an interprime number because it is at equal distance from previous prime (72743137) and next prime (72743149).

It is not a de Polignac number, because 72743143 - 2¹³ = 72734951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

Its product of digits (14112) is a multiple of the sum of its prime divisors (126).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72743149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1691680 + ... + 1691722.

It is an arithmetic number, because the mean of its divisors is an integer number (2705472).

Almost surely, 2^72743143 is an apocalyptic number.

72743143 is a deficient number, since it is larger than the sum of its proper divisors (13831961).

72743143 is a wasteful number, since it uses less digits than its factorization.

72743143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 126 counting only the distinct ones).

The product of its digits is 14112, while the sum is 31.

The square root of 72743143 is about 8528.9590806851. The cubic root of 72743143 is about 417.4431643620.

The spelling of 72743143 in words is "seventy-two million, seven hundred forty-three thousand, one hundred forty-three".