72424143 has 48 divisors (see below), whose sum is σ = 121430400. Its totient is φ = 41135040.

The previous prime is 72424139. The next prime is 72424159. The reversal of 72424143 is 34142427.

72424143 is a `hidden beast` number, since 7 + 242 + 414 + 3 = 666.

It is not a de Polignac number, because 72424143 - 2² = 72424139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72424193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 261321 + ... + 261597.

It is an arithmetic number, because the mean of its divisors is an integer number (2529800).

Almost surely, 2^72424143 is an apocalyptic number.

72424143 is a deficient number, since it is larger than the sum of its proper divisors (49006257).

72424143 is a wasteful number, since it uses less digits than its factorization.

72424143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 449 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 72424143 is about 8510.2375407506. The cubic root of 72424143 is about 416.8320666719.

The spelling of 72424143 in words is "seventy-two million, four hundred twenty-four thousand, one hundred forty-three".