72070142 has 8 divisors (see below), whose sum is σ = 110145096. Its totient is φ = 35355112.

The previous prime is 72070111. The next prime is 72070147. The reversal of 72070142 is 24107027.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72070147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339848 + ... + 340059.

It is an arithmetic number, because the mean of its divisors is an integer number (13768137).

Almost surely, 2^72070142 is an apocalyptic number.

72070142 is a deficient number, since it is larger than the sum of its proper divisors (38074954).

72070142 is a wasteful number, since it uses less digits than its factorization.

72070142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679962.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 72070142 is about 8489.4135250911. The cubic root of 72070142 is about 416.1518145052.

Adding to 72070142 its reverse (24107027), we get a palindrome (96177169).

The spelling of 72070142 in words is "seventy-two million, seventy thousand, one hundred forty-two".