72140122 has 8 divisors (see below), whose sum is σ = 108251136. Its totient is φ = 36056412.

The previous prime is 72140113. The next prime is 72140137. The reversal of 72140122 is 22104127.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 72140122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133 + ... + 12199.

It is an arithmetic number, because the mean of its divisors is an integer number (13531392).

Almost surely, 2^72140122 is an apocalyptic number.

72140122 is a deficient number, since it is larger than the sum of its proper divisors (36111014).

72140122 is a wasteful number, since it uses less digits than its factorization.

72140122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 72140122 is about 8493.5341289713. The cubic root of 72140122 is about 416.2864651957.

Adding to 72140122 its reverse (22104127), we get a palindrome (94244249).

The spelling of 72140122 in words is "seventy-two million, one hundred forty thousand, one hundred twenty-two".