72126130 has 16 divisors (see below), whose sum is σ = 130446144. Its totient is φ = 28712880.

The previous prime is 72126107. The next prime is 72126133. The reversal of 72126130 is 3162127.

It is not an unprimeable number, because it can be changed into a prime (72126133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14982 + ... + 19201.

It is an arithmetic number, because the mean of its divisors is an integer number (8152884).

Almost surely, 2^72126130 is an apocalyptic number.

72126130 is a deficient number, since it is larger than the sum of its proper divisors (58320014).

72126130 is a wasteful number, since it uses less digits than its factorization.

72126130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34401.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 72126130 is about 8492.7104036344. The cubic root of 72126130 is about 416.2595497212.

Adding to 72126130 its reverse (3162127), we get a palindrome (75288257).

The spelling of 72126130 in words is "seventy-two million, one hundred twenty-six thousand, one hundred thirty".