72101294 has 4 divisors (see below), whose sum is σ = 108151944. Its totient is φ = 36050646.

The previous prime is 72101291. The next prime is 72101311. The reversal of 72101294 is 49210127.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72101291) 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, 18025322 + ... + 18025325.

It is an arithmetic number, because the mean of its divisors is an integer number (27037986).

Almost surely, 2^72101294 is an apocalyptic number.

72101294 is a deficient number, since it is larger than the sum of its proper divisors (36050650).

72101294 is a wasteful number, since it uses less digits than its factorization.

72101294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36050649.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 72101294 is about 8491.2480825848. The cubic root of 72101294 is about 416.2117657950.

The spelling of 72101294 in words is "seventy-two million, one hundred one thousand, two hundred ninety-four".