72142754 has 4 divisors (see below), whose sum is σ = 108214134. Its totient is φ = 36071376.

The previous prime is 72142751. The next prime is 72142757. The reversal of 72142754 is 45724127.

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

It is an interprime number because it is at equal distance from previous prime (72142751) and next prime (72142757).

It can be written as a sum of positive squares in only one way, i.e., 43230625 + 28912129 = 6575^2 + 5377^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72142754.

It is not an unprimeable number, because it can be changed into a prime (72142751) 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 as a sum of consecutive naturals, namely, 18035687 + ... + 18035690.

Almost surely, 2^72142754 is an apocalyptic number.

72142754 is a deficient number, since it is larger than the sum of its proper divisors (36071380).

72142754 is a wasteful number, since it uses less digits than its factorization.

72142754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36071379.

The product of its digits is 15680, while the sum is 32.

The square root of 72142754 is about 8493.6890689500. The cubic root of 72142754 is about 416.2915278092.

The spelling of 72142754 in words is "seventy-two million, one hundred forty-two thousand, seven hundred fifty-four".