72134207 has 4 divisors (see below), whose sum is σ = 72203256. Its totient is φ = 72065160.

The previous prime is 72134191. The next prime is 72134239. The reversal of 72134207 is 70243127.

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

It is a cyclic number.

It is not a de Polignac number, because 72134207 - 2⁴ = 72134191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72134297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32933 + ... + 35054.

It is an arithmetic number, because the mean of its divisors is an integer number (18050814).

Almost surely, 2^72134207 is an apocalyptic number.

72134207 is a deficient number, since it is larger than the sum of its proper divisors (69049).

72134207 is a wasteful number, since it uses less digits than its factorization.

72134207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69048.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 72134207 is about 8493.1859157798. The cubic root of 72134207 is about 416.2750873306.

The spelling of 72134207 in words is "seventy-two million, one hundred thirty-four thousand, two hundred seven".